Hyale 571 



in o, 2^ Joint naiTOwer than in d, 6*^ not wider at base tban distally. 

 ■Gnathopod 2 in o like gnathopod 1, but 2^ Joint rather more expanded 

 distally; marsupial plates long, broad, fringed witb long setae. Peraeopods 

 1 — 5 rather robust, 6**^ Joint slightly curved, concave margin spinöse, convex 

 nnarmed, finger strong, curved, inner setule veiy small. Peraeopod 3, 2'^ 

 Joint subrotuud; peraeopod 4, 2*^ Joint oval; bind margin in these peraeopods 

 nearly sraooth. Peraeopod 5, 2^ Joint large, subrotund; bind margin pro- 

 duced below 'S^ Joint, rather strongly crenulate. Uropods 1 — 3 short, ramus 

 of uropod 3 shorter tban peduncle. Telson small, eacb half rather longer 

 than breadtb at base, apex blunt, naiTow, L. about 6 mm. 



Mediterranean ; Adriatic; North-Atlantic (Portugal; Azores). In sea-weed and on 

 a floating log. 



20. H. schmidtii (Heller) ?1862 Allorchestes microphthalmus. Bäte, Cat. Amphip. 

 Brit. Mus., p. 39 t. 6 f . 6 | 1866 Kicea schmidtii., Cam. Heller in: Denk. Ak. Wien, u26n 

 p. 11 t. 1 f. 31, 32 i 1879 Hyale s., Wrzeäniowski in: Zool. Anz., v.2 p. 202 j 1893 R. 

 prevostii (part.), A. Della V'alle in : F. Fl. Neapel, v. 20 p. 520. 



Near to H. camptonyx. Antenna 1, flagellum 14- or 15-jointed. 

 Antenna 2 7» ^.s long as body, flagellum 32 — 40-jointed. Maxülipeds, 4*^ 

 Joint of palp not quite as long as 3^, apical seta short. Gnathopod 1 in d, 

 6*^1 Joint suboval, being broader than in the other species, and the spinules 

 on bind margin less close together, finger long. Gnathopod 2 in d, 2*^ Joint 

 witb front margin straight, produced below into a small lobe, 3<^ Joint witb 

 well marked front lobe, 6*^^ Joint with very oblique palm, making an angle 

 with bind margin, but not defined by tooth or transverse space. Peraeopods 

 3 — 5, 6*^ Joint strong, curved, finger long, acute, and without(?) inner setule. 

 Peraeopod 5, 2*^ Joint witb bind margin almost smooth. Uropod 3, ramus 

 not ver}^ much shorter than peduncle. L. 7 mm. 



Mediterranean; Adriatic; North- Atlantic (Portugal). 



21. H. nigra (Hasw.) 1879 Allorchestes niger, Haswell in: P. Linn. Soc. N. S. 

 Wales, «.4 p. 319 i 1885 A.n., Haswell in: P. Linn. Soc. N. S. Wales, u 10 p. 96 t. 11 

 f. 1—3 I 1893 Hyale (part.)?, A. Della Valle in: F. Fl. Neapel, v.2Q p. 528. 



Very similar to H. camptonyx. Pleon segment 3, postero-lateral 

 comers acutely quadrate, slightly produced. Eyes round, sometimes tending 

 to oval. Antenna 1 reaching much beyond peduncle of antenna 2, peduncle 

 short, 2*1 Joint much shorter than 1^*, 3^ than 2*^, flagellum much longer 

 than peduncle, 9 — 11-jointed. Antenna 2 about half as long as body, 

 slender, flagellum very much longer than peduncle, joints in ö reaching 26 

 in number. Gnathopod 1, S*'^ Joint with fringed rounded process not clasping 

 base of 6*^, 6*^ oblong, rather nan'ow, witb median group of spinules on 

 bind margin, palm short, slightly oblique. Gnathopod 2 in d, 3<^ Joint with 

 well developed lobe in front, 4*^ with apex rather acutely produced, ö**» large, 

 broadly oblong oval, palm spinulose, oblique but shorter than bind margin, 

 well defined by a small tooth, finger fi-inged with setules on inner margin 

 and having a strongly projecting bulb at its base. Gnathopods 1 and 2 

 in 9 small, very like one another and the gnathopod 1 in d. Peraeopods 

 1 — 5 moderately robust, not strongly armed, the broad 2*^ Joint of peraeopod 5 

 with crenulate bind margin. Uropods 1 and 2 rather stout. Uropod 3 very 

 small, the ramus very short, much shorter than the peduncle. Telson small, 

 cleft almost to base, the lobes not veiy broad apically. Colour blackisb 

 purple or brown. L. 5 mm. 



Poi-t Jackson [East-Australia]. Among sea-weed. 



