Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 81, 1953
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Description of Male

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Length, 8 mm; width, 1 3/4 mm; depth 1 1/2 mm. Colour in spirits, white. Eyes small, black, apart, 1/3 width of head.

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Antennae. First: Longer than second antennae; length, 4 mm. Flagellum twice peduncle length, of 19 segments. Peduncle segments subequal in length. Second: Reaching 2/3 along flagellum of first antennae; length, 3 1/2 mm Peduncle, 2nd segment with conical protuberance and duct of antennal gland obvious; 3rd segment 3/4 length of 4th, 4th slightly more than 1/2 length 5th; numerous setae distally, 4th and 5th with groups of marginal setae. Flagellum longer than peduncle proper, 11–13 segments longer than wide, distally setose.

Gnathopods. First. Sideplate subovate, anterior margin slightly concave, distal angles absent, ventrally rounded; bare indication of triangular process posteriorly, anterior and ventral margins minutely spined. Basos width nearly 1/2 length, several long fine setae on posterior surface and margin. Ischium 1/3 basos length, very strong setal tuft on posterodistal angle Merus posterior margin rounding broadly to free distal margin, which has 8 or so long, strong

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Text-fig 3—Chiltonia enderbyensis, n.sp. 1—Antenna 2. 2—Gnathopod 1. ♂ 3—Gnathopod 1, ♀ 4—Gnathopod 2, ♂ 5—Gnathopod 2. ♀. 6—Organisms on gills 7—Peraeopod 1, ♂. 8—Peraeopod 1, posterior end of propod 9—Peraeopod 2, ♂, sideplate. 10—Peraeopod 3, ♂. 11—Peraeopod 4 ♂. 12—Peraeopod 5. ♂ 13–15—Epimeral plates 16—Pleopod 1, ♂ 17—Uropod 1 18—Uropod 2 19—Uropod 3, ♂ 20—Uropod 3, ♀ 21—Telson.

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setae; length more than twice greatest width, nearly 1/2 basos length; anterior margin contiguous with proximal 1/2 of carpus posterior. Carpus anterior margin 2/3 basos length, width 2/3 length; posterior free margin expanded between merus and propod as squarish lobe, a few surface setae; about 20 fine-combed spines on margin, some in double row. Propod subtriangular, anterior convex margin nearly as long as basos, 3 times length of free posterior margin; length twice greatest width, about 3 long setae medially on anterior margin, strong series on distal angle; posterior interrupted near distal angle by series of more than 6 strong fine-combed spines; distal angle defined by 2 stout short spines; setae on straight, slightly oblique palm; palm as long as posterior free margin, several long fine setae on outer side of propod surface, short spines on inner. Aquilinetipped dactylos as long as palm, impinging between defining spines. Second. Small subovate sideplate slightly deeper than wide, anterior and ventral margins minutely spined, distal angles absent, posterior margin excavate, noticeable triangular process. Basos proximally constricted, length more than twice width, several short fine single spines anteriorly, long fine setae posteriorly a few on posterior surface. Ischium subrectangular, much narrower than basos, length 1/4 basos, pair of small setae on distal angle. Merus V-shaped, widening slightly distally, posterior margin rounding to distal with a few setae on angle, length 1/3 basos, narrower than ischium Carpus subrectangular, barely longer than ischium. Propod ovate, tending to triangular, convex anterior margin as long as basos, convex free posterior margin about 3/5 length anterior; greatest width 4/5 length; oblique barely convex palm as long as free margin, with long setae. Dactylos longer than and overlapping palm, tip fitting into small pocket formed and protected by small oblong raised “shield” or plate-like flap.

Peraeopods. First: Sideplate deeper than wide, narrowing distally, anterior and ventral margins minutely spined; posterior with triangular process very high up. Gills simple, pendulous, in these specimens covered with remains of globelike animals, probably testaceans. Basos width nearly 1/3 length, a few small single setae anteriorly, short setae on basos and ischium posterodistal angles. Merus piriform, 3/4 basos length, small tufts of short setae on margins and distal angles. Carpus narrower, 2/3 merus length, anterior margin with 3 tufts of small setae, 12 or so irregular spines and a few setae on posterior Propod slightly shorter than merus, 2 tufts of short fine setae anteriorly, strong tuft on distal angle, more or less regular row of 9 spines with setae posteriorly; strange chitinous structure, probably glandular, at inner dactylos base, like small capsule surmounted distally by thickened wrinkled rosette, possibly small spine below that; occurs on all peraeopods in both sexes. Dactylos not 1/2 propod length. Second: Sideplate shovel-shaped, proximally as wide as deep, distally narrowing, minutely spined margins, ventral angles rounded, posteriorly excavate without distinct triangular process. Propod posterior margin with row of 11 spines Third Sideplate lobes subequal, anterior subovate, posterior tending to subrectangular, posterior margin markedly serrate distally, posterior and dorsal margins minutely spined. Basos, tuft of long setae proximally, single and paired short stout spines on rest of anterior margin; greatly convex and crenulate-serrate posteriorly. Ischium subsquare, 1/3 basos length, group of spines medially on anterior margin and on distal angle Merus length 2/3 basos, less than twice width, margins with 4 sets of single or grouped spines. Carpus slightly shorter, 4 sets of single or grouped spines anteriorly, 2 single spines and a few setae posteriorly. Propod as long as merus,

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3 or 4 sets of small fine setae on margin, anterior with 7 single or grouped sets of spines; dactylos 1/2 propod. Fourth: Sideplate subrectangular, width twice depth, posterior margin serrate, sharp posterodistal angle, minutely spined. Basos ovate, greatest width 2/3 length. Carpus and merus more spinous than Pr. 3, propod less so; segments proportionately longer and narrower, otherwise like Pr. 3. Fifth: Posterior margin of small sideplate serrate and minutely spined. Basos widest medially, as wide as long, anteriorly straight, greatly convex posteriorly; otherwise like Pr. 4.

Epimeral Plates. First Sharply subtriangular, posteriorly somewhat serrate, 2 serrations and spines distally on anterior margin. Second and Third: Deeper than wide, subrectangular, posterior margin serrate and minutely spined; anterodistal angle of second rounded; angle rounded but margins at right-angles in 3rd.

Pleopods. Rami of about 13 segments. First pleopod in male with inner ramus very strong, of 5 segments each with pair of short plumose setae; last segment with 2 or 3 pairs of plumose setae proximally, modified to strong bent dorsally-directed flagellum reaching halfway back to peduncle; flagellum near tip with strong tuft of setae giving cow's tail appearance, but with terminal portion of flagellum naked, surface scabrous, slightly hooked and terminally pointed.

Uropods. First: Rami only 1/2 peduncle length, each with 4 strong dorsal spines, 1 long spine terminally; peduncle outer dorsal margin with about 12 strong spearheaded seta-tipped spines, 4 on inner. Second: Peduncle, 5 strong spines on outer dorsal margin, 2 smaller ones on inner; rami shorter than peduncle; outer with 2 strong spines distally, 2 smaller ones dorsally; inner with 4 strong terminal spines, 1 medially, 1 or 2 small dorsal spines. Third: Small, one globular segment, 4 strong spear-headed spines dorsally; 3 or 4 smaller spines and 1 or 2 long setae terminally. Telson: Ovate, distally rounded, about 3 setae distally on outer margin.