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Volume 15, 1882
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Plates XIII.-XVI.

Aplysia Tryoni, Meinertzhagen. Pl. XIII., fig. a.

Dentition, 13–1-13. Teeth quadrate, with basal and reflected portions. Reflexed portion of central tooth trilobed, with a single cutting-point on the median and two small ones on each of the lateral lobes. Interior laterals three-lobed, the interior one the largest, each with a smooth cutting-point. Outer laterals one-lobed, with a toothed cutting-point. The three outer marginals reduced to plates.

The teeth figured are from a dried specimen collected at Napier, and given me by Mr. Tryon.

Calliopæa felina, Hutton. Pl. XIII., fig. b.

Radula, consists of about eleven blunt oval teeth placed in a single series, and getting gradually smaller.

The specimen figured came from Lyttelton.

Murex octogonus, Quoy and Gaimard. Pl. XIII., fig. c.

Dentition.—Central tooth with five nearly equal and equidistant cusps, the anterior surface concave, and the sides rounded. Operculum ovate, the nucleus subapical.

I am indebted to Mr. T. F. Cheeseman for specimens from Auckland.

Trophon paivæ, Crosse. Pl. XIII., fig. D.

Animal white, speckled with dead white. Foot slightly expanded and rounded in front, obtusely pointed behind. Tentacles approximated, the eyes on their external sides about two-thirds up from the base; siphon short, barely protruding from the canal. Dentition.—Central tooth with five pointed cusps, the middle one the largest, and those on each side of it

Picture icon

To illustrate Professor Huttons paper on Struthiolaria Papulosa.

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smallest; the anterior surface straight, and the sides truncated. Operculum, ovate, with the nucleus subapical; horny, transparent round the margin, the middle portion chestnut red, deeply trilobed on the inner edge.

The specimens figured were collected at Lyttelton.

Trophon durius, Hutton. Pl. XIII., fig. E.

Animal of a bright salmon-red colour. Dentition.—Odontoglossate, the lateral teeth not being versatile. Central tooth small, rectangular, longer than broad, with three small acute rather distant cusps; lateral teeth broad, curved, with seven cusps; the inner small, the next five subequal and close together, the outer small and distant from the others. Operculum ovate, subconcentric.

The specimens figured were collected in Auckland. The dentition shows that this species belongs to the Fusidœ, while its smooth columella and fusiform shell put it into the Fusinœ: the operculum, however, is quite different from any other species of the family, and it must therefore be placed in a new genus, which I propose to call Taron.

Neptunæa dplatata, Quoy and Gaimard. Pl. XIII., fig. f.

Dentition.—Central tooth arched with four rather long cusps with rounded points of which the two inner are slightly the larger; posterior margin deeply concave. Lateral teeth with three curved cusps, the outer longer and distant from the other two. Operculum oblong, rather unguiculate, nucleus apical.

I am indebted to Mr. T. F. Cheeseman for specimens in spirit from Auckland.

Professor Troschel has given a figure of the dentition of this species (Das Gebiss der Schnecken, ii. taf. vi., fig. 17) which differs very much from mine, and I cannot account for the difference.

Neptunæa nodosa, Martyn. Pl. XIII., fig. g.

Dentition.—Central tooth quadrate, the breadth three times the length, with four subequal triangular cusps placed close together. Lateral teeth as in the last species, but the cusps more curved. Operculum like that of the last species.

The specimen figured was sent me from Auckland by Mr. T. F. Cheeseman.

Euthria lineata, Chemnitz. Pl. XIII., fig. h.

Dentition.—Central tooth deeply curved, and the ends bent backward; a single tricuspidate cutting-point in the centre: laterals with three subequal and equidistant cusps. Operculum oval, the nucleus apical.

The specimen figured was collected at Lyttelton. The dentition of this species is quite different from that of its supposed variety C, figured in the Trans. N.Z. Inst., xiv., pl. vi., fig. d. This latter must therefore be

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considered as a distinct species; it may, however, be the same as E. littorinoides, Reeve. I have collected at Lyttelton a single living specimen of E. striata, Hutton (Trans. N.Z. Inst., vii., p. 458), and find that its dentition exactly resembles that of E. lineata here figured, the shell is quite colourless, but the animal is spotted with maroon brown.

Euthria vittata, Quoy and Gaimard. Pl. XIII., fig. i.

Dentition.—Central tooth nearly as long as broad, flat in front, convex behind, with three acute denticles; lateral teeth with the outer cusp very large, the two inner small and close together. Operculum oval, sub-unguiculate, nucleus apical.

The specimens figured were collected at Auckland.

Cominella vergata, Adams. Pl. XIII., fig. k.

Dentition and operculum normal.

The specimen figured was collected at Auckland.

Cominella maculata, Martyn. Pl. XIII., fig. l.

Dentition and operculum normal.

The specimen figured was collected at Auckland.

Cominella maculosa, Martyn. Pl. XIII., fig. m.

Dentition and operculum normal. Animal.—Foot emarginate in front; yellowish white, reticulated with bluish black, and margined anteriorly with yellowish white. Siphon moderate, tapering, black (drawn too long by Quoy, Voy. Astrol., pl. 30, f. 8–10). Eyes half-way up the tentacles. Tentacles black above the eyes, and slightly tipped with white; below the eyes they are longitudinally streaked with black.

The specimens described were collected at Lyttelton.

Cominella testudinea, Chemnitz. Pl. XIII., fig. n.

Dentition and operculum normal.

The specimen figured was collected at Auckland.

Polytropa haustrum, Martyn. Pl. XIII., fig. o.

Animal.—-White; tentacles short and blunt, the eyes situated more than half-way up. Dentition.—Central tooth broad, slightly curved with five subequal triangular contiguous cusps. Operculum oval, the nucleus sub-lateral.

The specimen figured was collected in Auckland.

This species has usually been put into Purpura, but its operculum is sufficient to remove it from that genus, and the aperture has no posterior canal.

Purpura textiliosa, Lamarck. Pl. XIII., fig. p.

Dentition.—Central tooth slightly sinuous, with three long triangular cusps, the median of which is the largest. Operculum semi-cordate, the nucleus lateral, on the exterior side.

The specimen figured was collected in Auckland.

Picture icon

To illustrate Professor Huttons paper on Branchiate Casteropoda.

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The operculum and the posterior canal show that this species belongs to Purpura, and not to Polytropa where it is usually placed.

Polytropa quoyi, Reeve. Pl. XIII., fig. q.

Dentition.—Central tooth convex in front and straight behind, with five narrow pointed, separated, denticles the external and median subequal, the intermediate two much smaller. Operculum ovate, the nucleus sub-apical.

The specimen figured was sent me from Auckland by Mr. T. F. Cheeseman.

The columella in this species is rounded and the operculum is muricoid. It is evidently not a Polytropa but a Trophon.

Polytropa striata, Martyn. Pl. XIII., fig. r.

Dentition.—Central tooth arched with a convex sinuation in the middle of the anterior margin. Cusps five, the median one isolated from the others and sometimes much longer. Operculum ovate, the nucleus sub-lateral.

The specimen figured was collected at Lyttelton.

Polytropa scobina, Quoy and Gaimard. Pl. XIII., fig. s.

Dentition resembles that of P. haustrum. Operculum oblong, the nucleus sub-lateral.

The specimen figured was collected at Auckland.

Polytropa albomarginata, Deshayes. Pl. XIII., fig. t.

Dentition resembles that of P. haustrum, but the cusps are broader. Operculum oval, the nucleus sub-lateral.

The specimen figured was collected at Lyttelton.

The species is the same as P. tristis, Dunker.

Voluta pacifica, Lamarck. Pl. XIII., fig. u.

Dentition.—Teeth arched, with three large subequal triangular cusps occupying the whole of the posterior margin. Operculum none.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Ancillaria australis, Sowerby. Pl. XIII., fig. v.

Dentition.—Central tooth slightly arched and square at the ends with three rather distant cusps, the middle one of which is the smallest. There are no denticles: lateral teeth like Purpura. Operculum oval, the nucleus sub-apical.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Coriocella ophione, Gray, (Lamellaria ?). Pl. XIII., fig. w.

Shell as described by Gray. Length .25, breadth .15 inch, resembles that of Cryptocella latens, Adams (Gen. Moll., p1. 21, f 4, b), and covers the whole animal. Animal with the mantle smooth covering the whole shell, not fissured on the back, notched in front; yellowish, marbled with grey; foot small, square in front, tapering behind, entirely covered by the mantle. Top of the head dark grey, or purple; eyes at the outer bases of the tentacles, which are large, and separated. Dentition, 1–1-1; central

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tooth with the base produced into two long processes, the anterior end slightly reflected and trilobed; lateral teeth versatile, broad, situated at some distance from the central tooth, their apices acute, uncinate, and denticulated on the inner side.

Several specimens of this little mollusc were sent me by Mr. T. F. Cheeseman from Auckland, where, I believe, it is not uncommon. The animal much resembles the Coriocella noire, Blainville, Malacol., t. 42, f. la, figured by Gray in Figures of Molluscous Animals, pl. 104, f. 3. I take it to be Gray's Lamellaria ophione, because it is said to be not uncommon at Auckland, but Gray's description would do for many species of different genera, and by itself is unrecognizable.

The animal mentioned by me in the Manual of New Zealand Mollusca, p. 59, as perhaps Lamellaria ophione is quite different, and may be called Lamellaria cerebroides.

Crypta costata, Deshayes. Pl. XIV., fig. a.

Dentition.—Central tooth nearly as broad as long, the reflected portion with three denticles on each side and a long median cutting-point; the first lateral has seven denticles, the second and third are nearly smoth, with four or five obsolete denticles on the outer side. There is a papillate horny jaw on each side of the mouth.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Crypta monoxyla, Lesson. Pl. XIV., fig. b.

Dentition.—Central tooth considerably longer than broad, with a single lobe or denticle on each side of the reflected portion. First lateral with the reflected portion sharply denticulated on both sides, about two denticles inside and five outside the large apical denticle; second and third lateral strongly denticulated on the outer side.

The specimen figured was collected at Auckland.

Turritella rosea, Quoy and Gaimard. Pl. XIV., fig. c.

Dentition.—Length of central tooth rather more than half the breadth, the reflected portion finely denticulated on each side, and with a larger median cutting-point. First lateral finely denticulated on the outer side; second lateral much broader than the third and spoon-shaped at the tip; both are finely denticulated on the outer side.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Cerithidea bicarinata, Gray. Pl. XIV., fig. d.

Dentition.—Length of the central tooth about two-thirds of the breadth; the posterior corners with a sharp cusp, which carries a single denticle at its inner base; reflected portion trilobed, the middle lobe larger and with a cutting-point. First lateral broad, produced at the outer basal end into a short stalk, reflected portion with a broad denticle and four or five smaller

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ones outside it; second lateral unguiculate, with four denticles; third lateral broader than the second, and with five denticles. Operculum multispiral, with a ragged edge.

The specimen figured was collected at Auckland.

Cerithidea nigra, Hombron and Jacquenot. Pl. XIV., fig. e.

Animal black; sparingly spotted with yellowish; head-lobes marked with yellowish; tentacles black, with three or four rings of white.

Dentition.—Length of central tooth rather more than half the breadth, reflected portion with five cusps, otherwise like C. bicarinata. First lateral like bicarinata, but the broad denticle often bifid; second and third laterals like bicarinata, but the third with six denticles.

The specimen figured was collected at Auckland.

Melanopsis trifasciata, Gray. Pl. XIV., fig. f.

Dentition.—Central tooth subquadrate, broader than long, the posterior angles sharp, the posterior margin with a convex, and the anterior margin with a concave sinuation; reflected portion with three denticles on each side and a broad and pointed cutting-point, that extends under the denticles. First lateral broad with three or four denticles. Second lateral rather broad with a spoon-shaped tip provided with three blunt denticles, a clavate accessory piece attached to the outer posterior corner. Third lateral narrow expanded into a denticulate spoon-shaped apex. Operculum oval with the nucleus subapical.

The specimen figured was sent by Mr. T. F. Cheeseman.

Janthina exigua, Lamarck. Pl. XIV., fig. g.

Dentition.—Similar to that of J. communis.

The specimen figured was given me by the Hon. G. McLean.

Nerita atrata, Lamarck. Pl. XIV., fig. h.

Dentition.—Central tooth rather small, quadrate, longer than broad, posterior margin concave with a cutting-point in the centre. First lateral very broad, the breadth nearly three times the length, expanding outwards, and with a cutting-point on the inner posterior angle. Second and third laterals minute plates; fourth lateral with a breadth twice the length, arched, with a broad dark brown opaque cutting-point. Marginals numerous with smooth points.

The specimen figured was collected at Auckland.

There are only four laterals, and the dentition seems to connect the Trochidœ with the Chitonidœ, although decidedly rhipidoglossal.

Huttonia bella, Hutton (Euchelus). Pl. XIV., fig. i.

Dentition.—Central tooth trilobed at the base, the central lobe smaller and not projecting beyond the lateral lobes, reflected portion denticulated on the sides. Laterals five, similar, getting longer as they are further away

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from the central tooth, denticulated on each side. Marginals denticulated on the outer side, those near the margin very narrow and sigmoid. Operculum horny, of few (3 or 4) whorls; pale in colour and transparent, the nucleus central.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Mr. T. W. Kirk, in the Trans. N.Z. Inst., xiv., p. 282, has proposed a new genus, Huttonia, to include this and two other species which he there describes, and the operculum proves to be very different from that of Euchelus.

Anthora tuberculata, Gray. Pl. XIV., fig. k.

Animal yellowish-brown, foot reddish-brown or purplish-brown; side lappets and head-lobes margined with white: proboscis reddish- or purplish-brown, margined with white: filaments white, three on a side. The head lobes are smooth and rounded and joined together over the head. The eyes are on rather long white peduncles. Dentition similar to that of A. tiaratus, but the central tooth not so broad. Operculum horny, multispiral.

The specimen figured was collected at Lyttelton.

Zizyphinus selectus, Chemnitz. Pl. XIV., fig. l.

Dentition like that of Z. punctulatus, but the first marginal appears to be short and broad; possibly this may be a broken specimen.

The specimen figured was collected at Auckland.

Gibbula oppressa, Hutton. Pl. XIV., fig. m.

Dentition.—Central tooth with the posterior margin straight. Fifth lateral with several short cutting-points. All the cutting-points smooth. Operculum horny, multispiral, with radiating striæ.

The specimen figured was sent by Mr. T. F. Cheeseman from Auckland.

Margarita (?) inconspicua, Hutton. Pl. XIV., fig. n.

Dentition similar to Cantharidus. Central tooth with a slight median lobe on the posterior margin; the first four laterals similar, the cutting-point denticulated on the inner side; fifth lateral with a large cutting-point on the inner side and two small ones outside it.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman.

Cantharidus purpuratus, Martyn. Pl. XIV., fig. o.

Animal pale yellowish; foot pointed behind, speckled with brown and transversely banded in front with reddish-brown or brown, and bordered with pale yellowish; rostrum greenish-yellow; head-lobes smooth; tentacles yellow or pale purplish; eye-peduncles yellowish-white, short and slender; filaments three on a side. Dentition normal, the central tooth rather broader than high.

The specimen figured was collected at Lyttelton.

Picture icon

To illustrate Professor Huttons paper on Branchiate Casteropoda.

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Calcar cookii, Chemnitz. Pl. XIV., fig. p.

Dentition.—Central tooth elongated, anterior half with parallel sides, posterior half expanded; winged on each side near the middle, posterior margin straight; no cutting-point. First to fourth lateral similar, broad, without cutting-points, with two wings on the exterior side which receive between them the inner side of the next tooth. Fifth lateral with the outer posterior corner produced into a long stalk, the reflexed portion tricuspid. First marginal very large, produced anteriorly and reflected at the margin, a strong triangular cutting-point arising from the middle of the tooth. Marginal teeth with smooth cutting-points.

The specimen figured was sent from Auckland by Mr. T. F. Cheeseman. The dentition is so very different from that of Calcar imperialis (as figured by Hogg) that the two cannot be placcd in the same genus, and the name Calcar cookii will have to be altered to Cookia sulcata, Martyn.

Diloma æthiops, Gmelin. Pl. XV., fig. a.

Dentition.—Central tooth broader than long, oblique, sloping posteriorly to the left, reflexed portion without cutting-points, but serrated on both sides at the base. Lateral teeth with cutting-points which are denticulated on both sides, those on the outer side being stronger. Outer marginals denticulated on both sides, the inner marginals denticulated on the outer side only.

The specimen figured was collected at Lyttelton.

Diloma nigerrima, Chemnitz. Pl. XV., fig. b.

Animal black: head with a narrow transverse band of yellow near the front margin; rostrum margined with white: tentacles long and tapering, longitudinally striped with black and yellowish. Filaments blue-black, three on a side, sometimes a fourth on the left side.* Foot white, closely and finely marbled with blue-black, and broadly margined with yellow veined with black. Dentition.—Central tooth much broader than long, oblique, sloping posteriorly to the right, the reflexed portion serrated on both margins, cutting-points of lateral teeth denticulated on both sides, but more strongly on the outside. Cutting-points of marginal teeth strongly denticulated on both sides.

The specimen figured was collected at Lyttelton. The movements of this species are very rapid, quite different from those of the other species of the genus.

Diloma undulosa, Adams. Pl. XV., fig. c.

Animal brownish-black; rostrum narrowly margined with yellow; tentacles margined with white; eye-peduncles broad and short; head-lobes pectinated; the right side lappet smooth, the left pectinated between the

[Footnote] * I have noticed the same in D. œthiops.

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filaments and the eye peduncles: filaments three on each side. Dentition.—Central tooth rather broader than long, not oblique, reflexed portion serrated on both sides at the base. Cutting-points of laterals and inner marginals denticulate on outer edge only, those of the outer marginals denticulated on both sides.

The specimen figured was collected at Sumner.

Diloma corrosa, Adams (= D. hectori, Hutton). Pl. XV., fig. d.

Animal the same as D. undulosa. Dentition.—Central tooth much broader than long, oblique, sloping posteriorly to the right. Cutting-points of laterals and inner marginals denticulated on the outer edge only, those of the outer marginals on both sides.

The specimen figured was collected at Sumner. It is, I think, only a variety of the last species.

Diloma plumbea, sp. nov. Pl. XV., fig. e.

Shell turbinate, imperforate, rather depressed, rough, sometimes with a few obsolete spiral ribs; whorls four or five; spire acute but usually eroded; colour bluish-purple, the eroded apex whitish. Interior white, iridescent, the throat with shallow grooves, aperture margined with a black band; columella impressed, curved, sometimes with a small anterior tooth. Axis .5; breadth .63. Animal like D. œthiops, the foot being margined with a band of black and white transverse stripes. Dentition.—Central tooth as in D. corrosa. Cutting-points of lateral teeth denticulated on both sides. Cutting-points of inner marginals denticulated on outer edge only, those of the outer marginals on both edges.

The specimen figured was collected at Sumner. The shell is not easy to distingush from some varieties of D. undulosa which has the same station, and the central tooth is like that of D. corrosa, but the animal and the lateral and marginal teeth are like D. œthiops. It is found usually in sheltered bays or estuaries, but sometimes on exposed rocks. I have collected it at Sumner and the Ocean Beach, Dunedin, and I have also seen specimens from Campbell Island.

Diloma excavata, Adams. Pl. XV., fig. f.

Dentition.—Central tooth broader than long, not oblique, the reflexed portion denticulated all along the edge; the cutting-points of the laterals and all the marginals are denticulated on both edges.

The specimen figured was collected by Mr. T. F. Cheeseman at North Manukau Heads.

Diloma (?) subrostrata, Gray. Pl. XV., fig. g.

Dentition.—Central tooth broader than long, not oblique, the reflected portion strongly denticulated on each side and eared. Cutting-points of lateral teeth slightly denticulated on each side; those of the inner marginals

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denticulated on the outer side only, those of the outer marginals strongly denticulated on both sides.

The specimen figured was collected at Auckland, on Zostera. The eared central tooth differs from all the other species of Diloma.

Haliotis iris, Martyn. Pl. XV., fig. h.

Animal sooty-black; foot deeply notched in front. Dentition, ∞ -5-1-5- ∞. Central tooth about as broad as long, rounded posteriorly, and eared, reflexed portion without cutting-points, a long process projecting backward and upward on each side below the reflexed portion. First lateral broader than long, subquadrate, without cutting-points. Second lateral oval, longer than broad, without cutting-points. Third lateral long and narrow with a clavate process extending from the exterior side, and the whole of the interior side occupied by a large cutting-point. Fourth lateral like the third but shorter and broader. Fifth lateral oblong, transverse, with a blunt cutting-point on the inner side. Marginals slender, denticulate on both edges.

The specimen figured was collected at Lyttelton.

Parmophorus unguis, Linné. Pl. XV., fig. i.

Dentition.—Central tooth subquadrate, broader than long, the reflexed portion without cutting-points. First to fourth laterals similar, oval, the length three times the breadth, without any cutting-points. Fourth and fifth laterals large with two strong cutting-points.

The specimen figured was collected at Lyttelton.

Acmæa conoidea, Quoy and Gaimard. Pl. XV., fig. k.

Animal.—Margin of the mantle not fringed. Dentition.—Length of the teeth more than three times the breadth, the recurved portions moderate; basal plates subrectangular, much longer than broad. No accessory teeth.

The specimen figured was collected at Sumner.

Acmæa corticata, Hutton. Pl. XV., fig. l.

Animal.—Margin of the mantle not fringed. Dentition.—Teeth rather broad, the recurved portions very broad and blunt; basal plates imbricating, the anterior margin straight, the posterior and exterior margins deeply sinuated, the interior margin concave; a pair of accessory hooked teeth on each side.

The specimen figured was collected at Dunedin.

Acmæa pileopsis, Quoy and Gaimard. Pl. XV., fig. m.

Dentition.—Length of teeth more than half the breadth, the recurved portions rather long and pointed; basal plates rhomboidal, with a central longitudinal groove. No accessory teeth.

The specimen figured was collected at the Auckland Islands by Mr. E. Jennings, and sent me by Prof. T. J. Parker.

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Acmæa flammea, Quoy and Gaimard. Pl. XV., fig. n.

Animal with the margin of the mantle fringed. Dentition.—Teeth much like those of A. pileopsis, but they are weak in the middle and often break when detached, so as to divide the anterior from the posterior recurved portion, thus approaching Patella, where the anterior and posterior portions are always separated. Basal plates subrectangular, the length about twice the breadth, and divided by a longitudinal line into two portions. No accessory teeth.

The specimen figured was collected at Lyttelton.

Patella magellanica, Martyn (?). Pl. XVI., fig. a.

Animal.—In this species, and in all the other of our Patellidœ that I have examined, the gills do not extend beyond the head, and the mouth is entire below, thus putting them into the genus Nacella, but the shell in all is thick and all live on rocks. In all the mantle is fringed. Dentition.—Inner teeth simple, pointed; outer bidentate on the outer side: central plate cuneate, divided down the centre; marginal plates rhomboidal, large.

The specimen figured was collected at the Auckland Islands by Mr. E. Jennings, and sent me by Prof. T. J. Parker.

Patella denticulata, Martyn (= P. luctuosa, Gould, Pl. XVI., fig. b).

Dentition.—Inner teeth simple, pointed, set near together; outer teeth with two denticles on the outer side, the lower often semi-detached; central plate lenticular, divided down the middle; marginal plates distant with a hooked anterior and jagged posterior end, a small detached plate a little above the hooked termination of the larger plate.

The specimen figured was collected at Dunedin.

Patella illuminata, Gould. Pl. XVI., fig. c.

Dentition.—Inner teeth with a single denticulation on the outer side; outer teeth with two denticulations on the inner and two on the outer side, the lower outer denticle detached; central plate lenticular; marginal plates linear forming a double series on each side.

The specimen figured was collected at Macquarie Island by Professor Scott, and sent me by Prof. T. J. Parker.

Patella olivacea, Hutton. Pl. XVI., fig. d.

Dentition.—Inner teeth simple, pointed; outer with two denticulations on the outer edge, the lower almost detached; central plate linear, or slightly cuneate, divided longitudinally into two, each half with a bright oval spot at the anterior end; marginal plates similar to those of P. denticulata, but the intermediate plate is much larger, and occupies most of the space between the hooked plates.

The specimen figured was collected at Dunedin; in the figure the inner teeth are shown too widely separated.

Picture icon

To illustrate Professor Huttons paper on Branchiate Casteropoda

Picture icon

To illustrate Professor Huttons paper on Branchiate Casteropoda

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Patella argyropsis, Lesson (= P. radians, Gml). Plate XVI., fig. e.

Dentition.—Inner teeth simple, pointed; outer with two denticulations on the outer side, the lower sometimes semi-detached, more often rectangular; central plate lenticular, divided longitudinally; marginal plates like those of P. olivacea, but the posterior margins smooth, and the intermediate plate sometimes hooked.

The specimen figured was collected at Lyttelton. P. pholidota, Lesson, has the same dentition, and can only be considered as a variety.

Chiton pellis-serpentis, Quoy and Gaimard. Pl. XVI., fig. i.

Dentition.—7–1–7. Central tooth with a narrow neck and expanded base like some of the Trochidœ, the reflexed portion without cutting-points. First lateral like the central, but longer. Second lateral placed obliquely with a long stalk and an opaque blunt cutting-point like Nerita. First marginal trilobed: second with a projecting anterior process from the inner angle of which proceeds a peltate tooth on a long stalk: third and fourth marginals oval; the fifth subquadrate.

The specimen figured was collected at Lyttelton.

Chiton glaucus, Gray. Pl. XVI., fig. f.

Dentition.—7–1–7. Central tooth spoon-shaped; first lateral like Trochidœ, with an unarmed reflexed portion: second lateral ovate with a large claw-shaped cutting-point on the anterior end, and an accessory plate below it: first and second marginals irregular: the third subtriangular, with a large ladle-shaped tooth arising from the inner side: fourth suboval; fifth subquadrate.

The specimen figured was collected at Dunedin.

Acanthochites zealandicus, Quoy and Gaimard. Pl. XVI., fig. g.

Dentition.—6–1–6. Central tooth quadrate, the reflexed portion without cutting-points: first lateral like the central but smaller: second lateral oblique, with a long stem and a recurved portion bearing three opaque dark-brown cutting-points: first marginal sub-quadrate; second, third, and fourth oval; from between the first marginal plates springs a spoon-shaped tooth.

The specimen figured was collected at Dunedin.

Cryptoconchus porosus, Burrow. Pl. XVI., fig. h.

Dentition.—6–1–6. Central tooth subquadrate, longer than broad, with a simple reflexed portion: first lateral curved round the central, the front portion reflexed: second lateral oblique, the stalk broad and rather sigmoid, the reflexed portion bearing three dark-brown opaque cutting-points: marginals ovate: from the first marginal there arises a spoon-shaped process, and from the second a large falcate process.

The specimen figured was collected at Lyttelton.

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Explanation of Plates XIII.—XVI.
Plate XIII.
A. Aplysia tryoni. Teeth.
B. Calliopœa felina. Radula.
C. Murex octogonus. Teeth. a, operculum.
D. Trophon paivœ. Teeth. a, operculum.
E. Taron dubius. Teeth. a, operculum.
F. Neptunœa dilatata. Teeth. a, operculum.
G. Neptunæa nodosa. Teeth. a, operculum.
H. Euthria lineata. Teeth.
I. Euthria vittata. Teeth. a, operculum.
K. Cominella virgata. Teeth. a, operculum.
L. Cominella maculata. Teeth. a, operculum.
M. Cominella maculosa. Teeth.
N. Cominella testudinea. Teeth.
O. Polytropa haustrum. Teeth. a, operculum.
P. Purpura textiliosa. Teeth. a, operculum.
Q. Trophon quoyi. Teeth. a, operculum.
R. Polytropa striata. Teeth. a, operculum.
S. Polytropa scobina. Teeth. a, operculum.
T. Polytropa albomarginata. Teeth. a, operculum.
U. Voluta pacifica. Teeth.
V. Ancillaria australis. Teeth. a, operculum.
W. Coriocella ophione. Teeth.
Plate XIV.
A. Crypta costata. Teeth.
B. Crypta monoxyla. Teeth.
C. Turritella rosea. Teeth.
D. Cerithidea bicarinata. Teeth and operculum.
E. Cerithidea nigra. Teeth.
F. Melanopsis trifasciata. Teeth and operculum.
G. Janthina exigua. A tooth.
H. Nerita atrata. Teeth. a, a marginal tooth.
I. Euchelus bellus. Teeth and operculum. a, an outside marginal tooth.
K. Anthora tuberculata. Teeth and operculum.
L. Zizyphinus selectus. First marginal tooth.
M. Gibbula oppressa. Teeth.
N. Margarita inconspicua. Teeth.
O. Cantharidus purpuratus. Central tooth.
P. Calcar cookii. Teeth.
Plate XV.
A. Diloma œthiops. Teeth.
B. Diloma nigerrima. Teeth. a, a marginal tooth.
C. Diloma undulosa. Teeth.
D. Diloma corrosa. Teeth.
E. Diloma plumbea. Teeth.
F. Diloma excavata. Teeth.
G. Diloma subrostrata. Teeth.
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H. Haliotis iris. Teeth. a, a marginal tooth.
I. Parmophorus unguis. Teeth.
K. Acmœa conoidea. Teeth. a, plates; b, side view of tooth.
L. Acmœa corticata. Teeth. a, plates.
M. Acmœa pileopsis. Teeth. a, plates; b, side view of tooth.
N. Acmœa flammea. Teeth. a, plates.
Plate XVI.
A. Patella magellanica. Teeth (removed on one side).
B. Patella denticulata. Teeth. a, plates.
C. Patella illuminata. Teeth.
D. Patella olivacea. Teeth.
E. Patella argyropsis. Teeth.
F. Chiton glaucus. Teeth.
G. Acanthochites zealandicus. Teeth.
H. Cryptoconchus porosus. Teeth.
I. Chiton pellis-serpentis. Teeth.