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Description of Male
Length 20 mm, depth 5 mm. Eyes round, black, apart.
Antennae. First: Reaches ⅔ along 5th peduncle segment of antenna 2. Peduncle 3rd segment ⅔ length 2nd; 2nd as long as 1st; all marginally spined. Flagellum as long as last 2 peduncle segments, of 9–12 distally spined segments. Second: Reaches about ⅓ length of body; 4th peduncle segment ½ length 5th; both spined on margins, end and surface, especially 5th; Flagellum as long as peduncle, of 29 segments, segments distally spined, wider than long.
Mouthparts, Upper Lip: Epistome strongly spined. Lower Lip: Inner lobes rudimentary; end and inner margins of principal lobes strongly setose. First Maxillae: Inner plate the shorter, lateral margins finely bristled; outer plate has minute palp with rudimentary 2nd segment. Second Maxillae: Inner plate slightly the shorter, long setae distally, plate surfaces finely bristled. Mandibles: Molar process has long plumose seta distally, small tuft of setae proximally; spine rows of 4–6 setose spines; right mandible has U-shaped lower article with fimbriated margin to cutting edge. Maxilliped: Inner plate has 3 stout teeth distally; setulose spines on either side of teeth, between and below them and halfway down cleft; 2 spines at basos insertion. Outer plate reaches almost ½ along carpus, outer distal and inner margins spined, spines on latter to a little below end of inner plate. Basos, ischium and merus all have strong spines on outer margins, shorter ones below merus and carpus inner proximal angles, a few stout spines on carpus distal angle; carpus and propod inner margins and propod distal margin have fields of fine spines; propod narrower than carpus and merus; dactylos absent.
Gnathopods. First: Sideplate subsquare, spined ventrally, posteriorly and on surface. Basos width ½ to ⅓ length: surface and posterior margins strongly spined. Ischium posterior margin about ⅓ basos length, strongly spined; merus subtriangular, anterior margin as long as ischium posterior, contiguous with proximal ½ of carpus posterior margin, surface and posterior margins strongly spined. Carpus margins subparallel, surface and margins strongly spined, almost twice merus length. Propod as long as carpus posterior margin, free posterior margin widens distally, posterodistal angle somewhat lobed, forming transverse palm, strongly spined; long narrow curved dactylos overlaps end of palm, a long thick spine below dactylos base. Second: Sideplate subsquare, strongly spined, excavate posteriorly. Basos narrowing proximally, width ⅓ length, margins and surface spined; ischium subsquare, posterior surface and margin spined.
![Thumbnail: [Volume 84, 1956-57 page 362]](/journals/rsnz/images/rsnz_84/thumbnails/rsnz_84_02_0411_0362_ac_02.gif)
Text-fig. 1.—Talorchestia quoyana (Milne-Edwards). Male. 1—Antenna 1. 2—Antenna 2. 3—Upper lip. 4—Lower lip. 5—Left mandible. 6—Maxilla 1.7—Maxilla 2. 8—Maxilliped. 9—Gnathopod 1. 10—Gnathopod 2. 11—Peraeopod 1. 12—Peraeopod 2, sideplate and basos, 13—Peraeopod 3.14—Telson.
![Thumbnail: [Volume 84, 1956-57 page 363]](/journals/rsnz/images/rsnz_84/thumbnails/rsnz_84_02_0412_0363_ac_02.gif)
Merus subrectangular, slightly longer and narrower than ischium, posterior and free distal margin spined, 1 or 2 spines on surface. Carpus crescentic. ½ merus size, only anterior margin free. Propod greatly expanded, subovate, spined oblique palm more than ½ length posterior margin, defined distally by large tooth; 2nd large tooth about ⅓ along palm, palm between teeth slightly convex; curved stout dactylos not overreaching palm.
Peraeopods. First: Sideplate subrectangular, spined ventrally and posteriorly and on surface, posteriorly excavate. Basos width ⅓ length, widest medially, margins and surface spined. Ischium subsquare, narrower than basos, posterior margin spined. Merus piriform, about ⅔ basos length, margins and posterior surface strongly spined. Carpus as wide, ½ merus length, similarly spined. Propod ½ carpus width, twice length, dactylos-shaped, margins and surface spined; long narrow dactylos slightly curved. Second: Shorter than 1st. Sideplate subsquare. Dactylos inner margin notched, with spine, Third: Much the smallest. Sideplate lobes ventrally spined, especially posterior; anterior lobe the larger; basos expanded, ovate, margins and surface spined. Otherwise like Pr. 1, but shorter and reverted. Fourth: Longer than Pr. 5. Basos ovate, longer than wide, many short stout spines on anterior margin and surface; smaller spines on crenulate posterior margin; spines on anterior margins of segments much finer and more numerous than on posterior. Fifth: Basos as wide as long, ovate; margins spined, anterior the more strongly so, posterior serrate with small spines, anterior surface spined; anterior margins of other segments with many long fine spines, posterior margins also spined. Propod very long and narrow, spined all over; long, narrow, barely-curved dactylos has spined inner margin.
Epimeral Plates. First subtriangular with only barest indications of posterodistal angle, spined either side; 2nd and 3rd subsquare with a few spines on rounded anterodistal angles, more on straight posterior margins.
Pleopods All biramous, segments barely indicated by paired plumose setae, peduncles strongly spined.
Uropods. First: Peduncle as long as rami, both dorsal margins and ventral margin of peduncle spined, rami strongly spined dorsally and distally. Second: Rami longer than peduncle; both dorsal margins and anterior surface of peduncle spined; rami strongly spined dorsally and at end, 2–3 spines ventrally on inner ramus Third: Ramus narrower and longer than peduncle, both strongly spined dorsally and distally. Telson: As wide as long, slightly emarginate, margins and surface strongly spined.