584 Allorcliestes 



peduncle rather shorter tban telson. Telson divided to the base, the 2' 

 triangulär lobes incliued oue to the otlier. L. 9 — 12 mm. 



Mediterranean, Adriatic. 



5. A. humilis Dana 1852 A. h., J. D. Dana in: P. Amer. Ae., v.2 p. 206 | 

 1853 & 55 A. h., J. D. Dana in: U. S. expl. Exp., v. 13ii p.890; t. 60 f. 6a— e ] 1899 

 A. h., T. Stebbing in: Tr. Linn. Soc. London, ser. 2 v.7 p.413 t. 33D | 1893 Hyale 

 prevostii (part.)?, A. Della Valle in: F. Fl. Neapel, y. 20 p. 528. 



Eyes a little oblong or round, ligbt-coloured, Antenna 1 a little shorter than 

 antenna2, peduncle % as long as peduncle of antenna 2, flagellum with 6 — Sjointa, 

 which are very distinct, somewhat moniliform (distally widened), Antenna 2 

 about Vg as long as body, ultimate and penultimate joints of peduncle subequal,. 

 peduncle with 9 or 10 joints, which are neither very long nor distally widened,. 

 setae all short. Maxiila 1, palp reaching base of spines of outer plate as in 

 Hyale (p. 559). Maxillipeds, 3"^ Joint of palp narrow. Gnathopod 1, 5*"^ Joint 

 Short, 6^^ much longer, oblong, widening to the oblique spinulose palm, with 

 spinules at points of bind margin. Gnathopod 2 similar, 6^*^ Joint considerably 

 larger, though (Dana) not twice as long, palm somewhat more oblique, with 

 definiug spine, spinules as in gnathopod 1, 5**^ Joint with small lobe produced 

 between 4*^ and 6*^^ finger curved and short, shutting close against the palm. 

 Peraeopods 3 — 5, 2^ Joint nearly orbicular, bind margin slightly crenulate. 

 .Peraeopods 1 — 5 moderately stout, iinger curved, with inner setules, as usual. 

 Branchial vesicles narrow proximally, then becomiug inflated. üropod 3 very 

 Short, ramus as long as peduncle, each with apical spines. Telson divided beyond 

 the middle, the apices divergent, truncate, tipped with spinules. L. 5 — 8 mm. 



Pacific (Port Jackson [East-Australia], shallow pools along shoi-es; Saghalien). 



A. angustus Dana 1854 A.a., J.D.Dana in: P. Ac. Philad., v.7 p. 177 | 1857 

 A. a., Stimpson in: Boston J. nat. Hist., ».6 p. 520 ] 1893 A. a., Hyale (part.)?, A. Della 

 Valle in: F. Fl. Neapel, v.2i) p. 527. 



Side-plates 1—4 very deep, Sth shallow. L. 9 mm. 



North-Pacific (California). 



A. brevieornis Dana 1852 A.b., J. D. Dana in: P. Amer. Ac, ».2 p. 206 | 

 1853 & 55 A.b., J. D. Dana in: U. S. expl. Exp., vA'in p. 893; t. 60 f. 8a— b | 1893 

 Myale prevostii ? (part.)?, A. Della Valle in : F. Fl. Neapel, v. 20 p. 528. 



Perhaps young (5 of a Hyale (p. 559). L. 10 mm. 



South-Pacific (New Zealand). Along shores of the J3ay of Islands. 



A. istrieus (Grube) 1861 Amphithöe (Hyale) istrica, E. Grube, Ausfl. Triest, 

 p. 135 I 1864 Mcea i., E. Grube in: Arch. Naturg., v.'iQi p. 200 | 1866 N. i., E. Grube 

 in: Arch. Naturg., u32i p. 387 t. 9 f . 5 | 1868 N. i., Czerniavski in: Syezda Russ. Est., 

 Syezda 1 Zool. p. 114 t. 8 f. 24, 25 | 1893 Hyale prevostii (part.), A. Della Valle in:: 

 F. Fl. Neapel, v. 20 p. 519. 



L. 6 — 9 mm. 



Adriatic (Trieste), Black Sea. 



A. japonicus Stimps. 1855 A. japonica, Stimpson in: P. Ac. Philad., v.7 p.383 ] 

 1893 Hyale pontica (part.)?, A. Della Valle in: F. Fl. Neapel, v. 20 p. 528. 



Eyes large, black, very broad oval, closely approaching each other above, 

 L. 12 mm. 



North-Pacific (Japan). 



