Hyale 567 



the middle greatly widening, 5*^ Joint sending out a lobe behind, friiiged 

 "with spinules and not reaching the apex,, but resting in the concave distal 

 margin of the 4*^ Joint; 6*^^ nan-owly oblong, with spinuliferous indent near 

 apex of bind margin, palm convex, slightly oblique, a little overlapped by 

 finger. Gnathopod 2 in d, 2^ Joint not broad, 4*^ rather produced behind, 

 and helpiug the small obscure o*'^ to form a cup for heart-shaped base of 

 the large oval 6*^^ Joint, of which the spinöse palm is oblique, nearly straight, 

 ending in a pocket, where it meets the short bind margin, which ends in a sort 

 of double tubercle carrying 2 palmar spines; the finger powerful, its apex 

 closing into the pocket. Gnathopods 1 and 2 in 9 resembling one an- 

 other and gnathopod 1 in d ; gnathopod 2 rather the larger. Peraeopod 3 

 stouter but not longer than peraeopods 1 and 2; peraeopod 4 rather stronger 

 tban peraeopod 5; 2*^ Joint in peraeopods 3 — 5 oblong oval, more rounded 

 in peraeopod 3, widest in peraeopod 5 with somewhat angular bind margin, 

 in peraeopod 4 bind margin closely friuged with small spinules; 4*^ Joint 

 having tufts of spines on bind margin in all 3 peraeopods. In peraeopods 

 1 — 5 finger strong, curved, concave margin microscopically pectinate, teeth 

 larger towards the nail. Pleopod 1, rami longer than peduncle, 15- or 

 16-jointed. üropod 1, peduncle rather longer than rami, with a strong 

 apical spine, outer ramus with only apical spines. üropod 2, peduncle 

 rather shorter than rami. üropod 3, ramus apically truncate, shorter than 

 peduncle. Telson cleft to the base, each lobe triangulär from centre to apex, 

 inner margin straight. Colour green to greyish or brownish, L. 8 — 12 mm. 



South-Pacific (Valparaiso). 



13. H. novaezealandiae (G. M. Thoms.) 1879 Nicea n., G. M. Thomson in: 

 Tr. N. Zealand Inst., v. 11 p. 235 t. 10b f. la-f | 1888 Hyale n., T. Stebbing in: ßep. 

 Voy. Challenger, v.29 p.500 | 1895 H. n., G. M. Thomson in: Tr. N. Zealand Inst., ».27 

 p. 211 I 1886 Nicea neo-zelanica, G.M.Thomson & Chilton in: Tr. N. Zealand Inst., 

 47.18 p. 144 I 1893 Hyale pi-evostii (part.), A. DellaValle in: F.FI. Neapel, «.20 p. 520. 



Very near to H. grandicornis, but distinct in the followiug respects. 

 Gnathopod 1 in (5 larger, hind lobe of 5**^ Joint larger, more produced, 

 apical, 6**1 Joint broader. Gnathopod 2 in d, 2** Joint distally a little 

 widened and lobed. Peraeopods 3—5, 4*** Joint having the spines along 

 hind margin solitary, not grouped. Peraeopod 4, 2'* Joint nearer to the 

 rounded form in 2^ Joint of peraeopods 3 and 5, its hind margin also 

 almost sraooth and not spinulose. Peraeopods 1 — 5, microscopical pectination 

 of concave margin of finger more faint, the customary setule stronger, than 

 in H. grandicornis. üropod 1, both rami with strong marginal spines. Colour 

 yellowish, marbled with red. L. 12 — 14 mm. 



South-Pacific (Otago Harbour [New Zealand], rock jjools; Macquarie Island). 



14. H. grimaldii Chevreux 1891 H. g., Chevreux in: Bull. Soc. zool. France, 

 «7.16 p.257 f.l— 5 I 1893 H prevostii (part.), A. DellaValle in: F. F). Neapel, 17.20 p.889. 



Side-plates 1 — 4 deep. Pleon segment 3, postero-lateral corners 

 quadrate. Eyes of moderate size, subrotund, black. Antenna 1, peduncle 

 Short, flagellum 9- or 10-jointed in d, 7-jointed in Q. Antenna 2 ^3 ^s 

 long as body, very stout, ultimate Joint of peduncle rather longer than 

 peuultimate, flagellum 17— 23-jointed in d, 12-jointed in 9; the distal 

 joiuts in all the flagella somewhat elongate, Gnathopod 1 in d, 5*^ Joint 

 with spine-fringed lobe, 6*^ oblong, but a little widened at base, palm almost 

 transverse, finger overlapping its rounded angle. Gnathopod 2 in d large, 



