Art. XXVI.—Results of Dredging in Hauraki Gulf; with Descriptions of Seven New Species.

By Henry Suter.

5. Daphnella conquisita, n. sp. Plate IX, fig. 1.

Shell small, fusiform, thin, fragile, semitransparent, spirally lirate. Sculpture consists of narrow, sharply rounded and elevated spiral ribs, narrower than the grooves, 4 on the spirewhorls, 10 on the body-whorl, the interspaces radiately microscopically finely striate. Colour light-fulvous. Spire elevated, higher than the aperture. Protoconch formed by 2 smooth and convex whorls. Whorls 6, regularly increasing, slightly shouldered, flatly convex, base contracted. Suture impressed and margined below by a small thread on the penultimate whorl only. Aperture oblong-oval, margins nearly parallel, produced below into an open, slightly flexuous canal, truncated at the base. Sinus obsolete. Outer lip sharp, inside smooth, convex above, concave on the canal. Columella sinuous, slightly produced in the middle, without any callosity.

Altitude, 6 mm.; diameter, 2·2 mm.

Type to be presented to the Colonial Museum.

A very well characterized species, in sculpture approaching D. lacunosa, Hutt., which, however, has smooth grooves.

6. Murex zelandicus, Q. and G.

Voy. “Astrolabe,” Zool., vol. ii, 1833, p. 529, pl. 36, figs. 5–7.

One live young specimen.

7. Murex octogonus, Q. and G.

Voy. “Astrolabe,” Zool., vol. ii, 1833, p. 531, pl. 36, figs. 8–9.

A few specimens, one of them alive.

8. Trophon curtus, Murdoch.

Trans. N.Z. Inst., vol. xxxvii, 1905, p. 228, pl. 8, fig. 22.

Two dead shells of this small species were obtained.

9. Trophon pusillus, n. sp. Plate IX, fig. 2.

Shell small, fusiform, fairly solid, imperforate, with nodulous ribs. Sculpture formed by spiral and radiate rounded ribs, produced into oval nodules at the points of intersection; there are 11 longitudinal ribs on the last whorl, but slightly narrower than the interspaces, 2 spiral ribs on the upper whorls succeeding the protoconch, 3 on the penultimate, and 10 on the last whorl. From the base of the fourth whorl minute and close radiate striœ are beginning to ornament the whole surface of the shell, most of the nodules remaining partly smooth. Colour yellowish-white. Spire conical, a little shorter than the aperture. Protoconch mammillate, smooth, consisting of 3 strongly

convex whorls. Whorls 6, lightly shouldered, base concave. Suture impressed, undulate. Aperture elongately pyriform, produced into a comparatively long canal, which is subtruncate and slightly deflexed to the right. Outer lip broken off. Columella straight, obliquely truncate below, terminating in a sharp point on reaching the left margin of the canal; inner lip forming a rather narrow callosity with a longitudinal furrow parallel to the margin.

Altitude, 6 mm.; diameter, 3·5 mm.

Type to be presented to the Colonial Museum.

Three specimens only were dredged. This species is near T. curtus, Murd., but may at once be distinguished from it by the microscopic axial striation and the long canal.

10. Columbella choava, Reeve.

Conch. Icon., sp. 239, 1858.

Two immature empty shells.

11. Siphonalia nodosa (Martyn).

Buccinum nodosum, Martyn, Univ. Conch., vol. i, 1784, fig. 5.

Four examples, two of which were alive.

12. Megalatractus maximus (Tryon).

Siphonalia maxima, Tryon, Man. Conch. (1), vol. iii, 1881, p. 135, pl. 54, fig. 355; Hedley, Mem. Austral. Mus., vol. iv, 1903, p. 374, pl. 38.

Two live specimens, one of them about half-grown. The larger specimen is decollated, has 7 whorls, and a length of 145 mm. Kesteven has published a paper on the anatomy of Megalatractus—which, however, I have not seen yet—and has assigned the above species to this genus. This is a very interesting addition to the New Zealand fauna. The protoconch of this shell was figured in last year's Transactions (pl. 24, fig. 28).

13. Cominella huttoni, Kobelt.

Jahrb. d. Deutsch. Mal. Gesellsch., 1878, p. 233.

Three empty shells.

14. Vulpecula rubiginosa (Hutton).

Columbella (Atilia) rubiginosa, Hutton, Cat. Mar. Moll. N.Z., 1873, p. 20.

Two empty shells.

15. Marginella allporti, Ten.-Woods.

Proc. Roy. Soc. Tasmania, 1877, p. 28.

One dead shell. This is another addition to the list of New Zealand molluscs.

16. Ancilla mucronata, Sowerby.

Spec. Conch., part i, 1830, p. 8, figs. 47–48.

Six empty shells.

17. Ancilla bicolor, Gray.

Jukes, Voy. “Fly,” vol. ii, 1847, p. 357, pl. 1, fig. 4.

A few young and empty shells.

18. Odostomia angasi, Tryon.

Man. Conch. (1), vol. viii, 1886, p. 362, pl. 79, fig. 68.

Two dead shells.

19. Odostomia vestalis, Murdoch.

Trans. N.Z. Inst., vol. xxxvii, 1905, p. 227, pl. 8, fig. 20.

One empty shell.

20. Odostomia marginata, Murd. and Sut.

Trans. N.Z. Inst., vol. xxxviii, 1906, p. 297, pl. 25, fig. 37.

Several dead shells.

21. Odostomia fastigiata, n. sp. Plate IX, fig. 3.

Shell small, subcylindrically acuminate, imperforate, smooth, with a distinct columellar plait. There is no sculpture, except distinct incremental lines. Colour white. Spire high, slowly tapering towards the small globular apex, more than three times the height of the aperture. Protoconch heterostrophe, subcentral, smooth, the apex tilted up and globular, one whorl. Whorls 7, first slowly increasing, the last about half the length of the whole shell; base narrowly rounded. Suture distinct, but superficial. Aperture vertical, ovate, truncated above by the body-whorl. Outer lip very little curved, broken off; basal lip narrowly convex. Columella with a distinct blunt plait above, slightly concave below.

Altitude, 4·5 mm.; diameter, 1·5 mm.

Type to be presented to the Colonial Museum.

One specimen only. This species stands nearest to O. vestalis, Murd., but it is more cylindrical, has no microscopic spiral striation, and the suture is not submargined.

22. Turbonilla zealandica (Hutton).

Chemnitzia zealandica, Hutton, Cat. Mar. Moll. N.Z., 1873, p. 22.

A few specimens only.

23. Struthiolaria tricarinata, Lesson.

Ann. des Sci. Nat. (2), vol. xvi, 1830, p. 256.

Eight empty specimens.

24. Serpulus sipho (Lamarck).

Serpula sipho, Lamarck, Anim. s. Vert., vol. v, 1818, p. 626. (Vermetus novœe-hollandiœe, Rousseau.)

One dead shell.

25. Turritella rosea, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1834, p. 136, pl. 55, figs. 24–26.

Only one empty specimen.

26. Turritella fulminata, Hutton.

Cat. Mar. Moll. N.Z., 1873, p. 29.

A number of young empty shells.

27. Turritella carlottœe, Watson.

Journ. Linn. Soc., Zool., vol. xv, 1880, p. 222.

Eight specimens, all empty.

28. Triphora infelix, Webster.

Trans. N.Z. Inst., vol. xxxviii, 1906, p. 307, pl. 38. fig. 6.

One specimen only turned up.

29. Newtoniella stiria, Webster.

Trans. N.Z. Inst., vol. xxxviii, 1906, p. 307, pl. 38. fig. 5.

One young shell.

30. Cerithiopsis crenistria, n. sp. Plate IX, fig. 4.

Shell small, turriculate, imperforate, thin and semitrans-parent, ornamented with numerous nodules, aperture small, terminating in a short and widely open canal. Sculpture formed by 2 low spiral ribs, which are crossed by equidistant radiate costiæe, 12 on the last whorl, not reaching to the suture; the crossing-points of the two kinds of ribs are raised to very distinct nodules, first round, oval on the later whorls. Colour very

light-brown, shining. Spire high, turriculate. Protoconch of a lighter colour, 1 ½ whorls, top flattened, radially striate and on the periphery with a row of elongated small nodules. Whorls 9, the second has a slightly greater diameter than the third; sides biangulate, nearly straight; base flat, depressed round the canal. Suture very distinctly impressed, margined below by a small thread. Aperture subquadrate, produced into an open and short canal, which is a little turned to the left and backward. Outer lip sharp, but little convex, basal lip concave. Columella slightly concave, the inner lip spreading as a very thin, narrow, and whitish glaze over it.

Altitude, 8 mm.; diameter, 3 mm.

Type to be presented to the Colonial Museum.

One specimen was found, and I do not think it is adult. Our other species, C. sarissa, Murd., is smaller and more subulate, it has three spiral threads, and the nodules are less prominent.

31. Rissoa impressa, Hutton.

Trans. N.Z. Inst., vol. xvii, 1885, p. 321; Plioc. Moll. of N.Z., 1893, pl. 8, fig. 64.

One specimen. This species was hitherto only known as fossil from the Pliocene.

32. Rissoina parvilirata, n. sp. Plate IX, fig. 5.

Shell small, oblong, imperforate, white, microscopically spirally lyrate, base subtruncate. The sculpture consists of close fine spiral grooves, visible only under a lens, the interspaces being broader. Colour pure-white, shining. Spire conical, a little higher than the aperture. Protoconch minute, smooth, with globular apex. Whorls 4, the last large, occupying three-fourths of the whole length, slightly flattened below the suture, slightly convex. Suture superficial, submargined above. Aperture vertical, pyriform, truncated at the base. Outer lip strong, descending nearly straight, then turning at a narrowly rounded angle toward the almost straight basal lip. Columella concave and truncated below. Inner lip forming a strong but narrow callus on the body-whorl, broadening above, where it joins the outer lip; on the columella it is much narrower, covering only the inner half of it.

Altitude, 3 mm.; diameter, 1.5 mm.

Type to be presented to the Colonial Museum.

Only a few specimens were amongst the dredgings. It is a very well characterized species. It has also been obtained off Otago Heads, and in sand at Narrow Neck, Devonport.

9—Trans.

33. Calyptræa novÆ-zeelandiÆ, Lesson.

Voy. “Coquille,” Zool., vol. ii, 1830, p. 395.

A few empty shells.

34. Calyptræa scutum, Lesson.

Voy. “Coquille,” Zool., vol. ii, 1830, p. 395.

Many dead shells with the septum mostly broken off.

35. Crepidula crepidula (Linné).

Patella crepidula, L., Syst. Nat., ed. 10, 1758, p. 1257.

A few dead shells.

36. Crepidula aculeata (Gmelin).

Patella aculeata, Gmel., Syst. Nat., ed. 13, 1788, p. 3693.

A few shells.

37. Trichotropis inornata, Hutton.

Cat. Mar. Moll. N.Z., 1873, p. 26.

One empty shell only.

38. Natica zelandica, Q. and G.

Voy. “Astrolabe,” Zool., vol. ii, 1832, p. 237, pl. 66, figs. 11–12.

One empty shell.

39. Trochus tiaratus, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1834, p. 256, pl. 64, figs. 6–11.

Three young dead shells.

40. Calliostoma pellucidum, Valenciennes.

Voy. “Venus,” Moll., pl. 4, fig. 2, 1846.

Two live examples.

41. Cyclostrema subtatei, n. sp. Plate IX, figs. 6–8.

Shell minute, subdiscoidal, spirally lyrate, broadly umbilicated. Sculpture formed by broad and shallow spiral grooves, slightly broader on the periphery, leaving between them narrow and sharply raised ridges, 10 on the last whorl. Colour white. Spire very low. Protoconch flatly convex, smooth, formed by one whorl. Whorls 3, the last large and descending a little,

flat near the suture, rounded at the periphery; base convex. Suture not much impressed. Aperture circular, peristome continuous, solid. Umbilicus wide and perspective.

Altitude, 1.5 mm.; diameter—maj., 2.5 mm.; min., 2 mm.

Type to be presented to the Colonial Museum.

One specimen only was gathered. I fully agree with my friend Mr. Hedley that this species is nearly allied to C. tatei, Angas, from South Australia, but the latter is larger, has a more elevated spire, the spiral ridges are less numerous, more distant on the upper side, and the interstices are ornamented with close fine and oblique radiate striÆ, a feature totally wanting in our species; there are only faint incremental lines. I found this shell also in sand from Lyall Bay.

42. Emarginula striatula, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1834, p. 332, pl. 68, figs. 21–22.

Fragments only.

43. Acanthochites rubiginosus (Hutton).

Tonicia rubiginosa, Hutton, Trans. N.Z. Inst., vol. iv, 1872, p. 180.

Three intermediate valves.

44. Lepidopleurus inquinatus (Reeve).

Chiton inquinatus, Reeve, Conch. Icon., pl. 23, fig. 154, 1847.

One live specimen.

45. Myodora subrostrata, E. A. Smith.

Proc. Zool. Soc., 1880, p. 584, pl. 53, fig. 6.

One left (flat) valve.

46. Saxicava arctica (Linné).

Mya arctica, Linné, Syst. Nat., ed. 10, 1758, p. 1113.

A few dead shells.

47. Corbula zelandica, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1835, p. 511, pl. 35, figs. 12–14.

A few shells and valves.

48. Corbula macilenta, Hutton.

Cat. Tert. Moll. N.Z., 1873, p. 18.

A few shells and valves.

49. Psammobia zelandica, Deshayes.

Proc. Zool. Soc., 1854 (1855), p. 319.

A few valves.

I am now quite certain that the late Captain Hutton was quite right in omitting Psammobia affinis, Rve., from our list.

50. Protocardia (Nemocardium) pulchella (Gray).

Cardium pulchellum, Gray, in Dieffenbach's Travels in N.Z., vol. ii, 1843, p. 252.

A few valves.

I think this species answers to the requirements of the diagnosis of Protocardia, sect. Nemocardium. Copying from Dr. W. H. Dall, Trans. Wagn. Free Inst. Sci., vol. iii, part v, p. 1078, they read as follows:—

Genus Protocardia, Beyrich. Zeitschr. f. Malak., 1845, p. 17. —Shell globose with a posterior area sharply distinguished by sculpture from the rest of the surface; closed; hinge normal, with no lunule or escutcheon.

Sect. Nemocardium, Meek, Pal. Upper Missouri, 1876, p. 172. —The posterior area spinose or tuberculate, the remainder of the surface finely radially striate or finely reticulate; the anterior laterals springing from the umbonal cavity.

51. Macrocallista multistriata (Sowerby).

Cytherea multistriata, Sowerby, Thes. Conch., vol. ii, 1851, p. 628, pl. 136, fig. 177.

A few valves.

52. Dosinia lambata, Gould.

Proc. Boston Nat. Hist. Soc., vol. iii, 1850, p. 277.

One valve.

53. Chione mesodesma (Q. and G.).

Venus mesodesma, Q. and G., Voy. “Astrolabe,” Zool., vol. iii, 1835, p. 532, pl. 84, figs. 17–18.

Many valves were dredged.

54. Chione oblonga (Hanley).

Venus oblonga, Hanley, in Wood's Index Test., Suppl., 1828.

One valve only.

55. Mactra scalpellum, Reeve.

Conch. Icon., pl. 19, fig. 106, 1854.

A few valves.

56. Zenatia acinaces (Q. and G.).

Lutraria acinaces, Q. and G., Voy. “Astrolabe,” Zool., vol. iii, 1835, p. 545, pl. 83, figs. 5–6.

Fragments only.

57. Tellina angulata, Hutton.

Trans. N.Z. Inst., vol. xvii, 1885, p. 322.

Fragments only were obtained.

58. Leptomya lintea (Hutton).

Tellina lintea, Hutton, Cat. Mar. Moll. N.Z., 1873, p. 67.

A few valves.

59. Diplodonta zelandica (Gray).

Lucina zelandica, Gray, in Yate's N.Z., Appendix, 1835, p. 309.

A few valves.

60. Loripes concinna, Hutton.

Trans. N.Z. Inst., vol. xvii, 1885, p. 323.

Again a few valves only.

61. Divaricella cumingi (Adams and Angas).

Lucina (Cyclas) cumingi, Ad. and Ang., Proc. Zool. Soc., 1863, p. 426, pl. 37, fig. 20.

Valves only.

62. Venericardia difficilis (Deshayes).

Cardita difficilis, Desh., Proc. Zool. Soc., 1852 (1854), p. 103, pl. 17, figs. 16–17.

A number of valves were obtained.

63. Venericardia lutea (Hutton).

Cardita lutea, Hutton, Man. N.Z. Moll., 1880, p. 159.

Numerous valves.

64. Pecten medius, Lamarck.

Anim. s. Vert., vol. vi, 1819, p. 163.

One empty shell.

65. Pecten convexus, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1835, p. 443, pl. 76, figs. 1–3.

A few fragments only.

66. Pecten zelandiÆ, Gray.

Dieffenbach's Travels in N.Z., vol. ii, 1843, p. 260.

A good number of small valves.

67. Ostrea reniformis, Sowerby.

Conch. Icon., 1871, fig. 57.

Valves of young specimens.

68. Modiolus australis, Gray.

King's Voy. Intertrop. Coasts Australia, vol. ii, 1827, p. 477.

One damaged valve only.

69. Modiolaria impacta (Hermann).

Crenella impacta, Herm., Spengler in Naturforscher, vol. x, 1776, pl. 6, fig. 8.

A few valves.

70. Pectunculus laticostatus, Q. and G.

Voy. “Astrolabe,” Zool., vol. iii, 1835, p. 466, pl. 77, figs. 4–6.

One valve only.

71. Anomia furcata, n. sp. Plate IX, figs. 9–10.

Left valve circular to oval, sometimes irregular, convex, thin, semitransparent, radiately costate and with distinct concentric ridges. Beak distinct, nearly smooth, and more or less central; one specimen (fig. 10) has a deep posterior notch, another example has three deep posterior notches, and two shallow ones on the anterior end. The dorsal margin is either straightened or flatly convex. The sculpture consists of narrow, nodulous radial riblets, obsolete in some places, and mostly bifurcating towards the margin. The concentric ornamentation is formed by fine, close, and slightly undulating lines of growth, interspersed with distant stronger ridges. Colour whitish-yellow. Interior of the same colour and somewhat pearly, with a sharp and smooth margin. There is a well-marked transversely elongate ligamental fossette. The upper byssus adductor scar is long, tongue-shaped, the lower small

and oval, and the valve adductor scar is of about the same size and triangularly oval. Pallial line entire, simple.

Dimensions of a left valve: Height, 16.5 mm.; length, 16 mm.; diam., 3 mm.

Type to be presented to the Colonial Museum.

Only a number of left valves were obtained, of which one only showed the muscle-scars distinctly.

72. Nucula nitidula, A. Adams.

Proc. Zool. Soc., 1856, p. 51.

A few valves.

73. Leda bellula, A. Adams.

Proc. Zool. Soc., 1856, p. 49.

A few valves.

Note.—Having sent a few valves of our supposed Leda bellula, A. Ad., to Mr. E. A. Smith, I.S.O., of the British Museum, he most obligingly compared them with the type, and wrote to me: “These valves are very like but not quite the same. They are more inequilateral—that is, the posterior half is rather longer in proportion to the anterior, the transverse sculpture is finer, and the posterior escutcheon decidedly broader.”

A number of years back Mr. R. H. Shakespear, of Little Barrier Island, dredged in about 20 fathoms between this and Tiri-Tiri Island, and the material was kindly handed over to me for examination by Mr. T. F. Cheeseman, and the following is the result of the examination:—

1.	Mangelia flexicostata, Suter.
2.	Murex octogonus, Quoy and Gaimard.
3.	" subsp. umbilicata, Ten.-Woods.
4.	Columbella choava, Reeve.
5.	Cominella maculata, Martyn.
6.	" huttoni, Kobelt.
7.	Vulpecula hedleyi, Murdoch.
8.	Marginella albescens, Hutton.
9.	" mustelina, Angas.
10.	" allporti, Ten.-Woods.
11.	Ancilla bicolor, Gray.
12.	Eulimella cœena, Webster.
13.	Odostomia impolita, Hutton.
14.	" rugata, Hutton.
15.	Turbonilla zealandica, Hutton.
16.	Turritella kanieriensis, Harris.