Cumacea: 17. Pseurlocuinatidae, 1. Petalosarsia, 2. Schizorhynchus 143 



to the end of the body. Peraeopod 1, 2"*^ joint much curved, not so long- 

 as remainder of the limb fully extended, 5*'» joint twice as long as broad, 

 but its breadth exceeding length of the sixth joint. 2"*^ peraeopod scarcely 

 more than half as long as the I'S its 5*'^ joint a little longer than the 4*'^ 

 but shorter than the 7*''. Peduncle of uropods little more than half the length 

 of the endopod, which is rather longer than the exopod. Colour uniformly 

 yellow. L. 9 4 mm, d nearly 5 mm. 



Norway, Lofoten Islands, depth 94 — 113 n:, Coast of Finmark, depth 38 — 75 m, 

 Spitzbergen; Franz-Josefs Land; Heligoland; N. E. England, depth 68 — 104 m; Firth 

 of Forth; Irish Sea; off Newfoundland, depth 160 m; U.S.A., off Martha's Vineyard, 

 depth 71 m; Nova Zembla, 90 m. 



2. Gen. Schizorhynchus 0. Sars 



1900 Schizorhynchus, Gr. 0. Sars, Crust. Norway, v. 3 p. 73. 



Pseudorostrum with lobes meeting for a very short space in front of 

 the eyelobe, then being separated by a deep interval; antero-lateral corners 

 more or less quadrate, with serrulate front margin. Eyelobe short and broad, 

 occupied generally by a transverse row of three corneal lenses, of which the 

 central one may be wanting in the female. Peduncle of uropods not longer 

 than the rami. 



4 species. 

 Synopsis of species: 



j Integument everywhere spiculate 1. S. seabriusculus 



\ Integument not spiculate — 2. 



I Uropod with endopod shorter than exopod ;telson denticulate 2. S. eudorelloides 



"( Uropod with equal rami; telson not denticulate — 3. 



I Telson nearly quadrate; eye of female with only 2 lenses 3. S. bilamellatus 



\ Telson semicircular; eye of female with 3 lenses ... 4. S. abbreviatus 



1. S. seabriusculus (0. Sars) 1894 Psemlocuma scahriuscula, G. 0. Sars in: 

 Bull. Ac. St.-Petersb., ser.4 vA («. 36) p.'332 1. 12 f. 11— 14 | 1900 Schizorhynchus seabri- 

 usculus, G. O. Sars, Crust. Norway, v.'d p. 73 | 1907 Psendocuma scahriuscula, Lebediew 

 in: Trudui St.-Peterb. Obshch., v. 38i p. 95. 



Body short and stout, integument hard, everywhere scabrous with small 

 projecting spikes. Pseudorostrum produced to widely and deeply separated 

 subacute points, the antero-lateral corners subquadrate, serrate in front. Cara- 

 pace broadest behind, a little constricted in the middle, with a pair of carinae 

 from tips of pseudorostrum embracing the frontal region, branchial regions 

 tumid. Pedigerous segments not carinate. Pleon short, telson small, semi- 

 circular. Eyelobe truncate, with all three corneal lenses distinct. Peduncle 

 of uropods considerably shorter than the subequal rami, endopod with serrulate 

 medial margin. Colour greyish white. L. 9 3 mm. 6 unknown. 



Caspian Sea. 



2. S. eudorelloides (O. Sars) 1894 Fseudocuma e., G. 0. Sars in: Bull. Ac. 

 St.-Petersb., ser.4 vA {v.B6) p. 330 t. 12 f. 1— 10 | 1900 Schizorhynchus e., G. 0. Sars, 

 Crust. Norway, v. 3 p. 73 | 1901 Fseudocuma e., S. Zernow in: Annuaire Mus. St.-Petersb., 

 V.6 p. 568 1 1907 P. e., Lebediew in: Trudui St.-Peterb. Obshch., v.'68i p. 95. 



Body rather stout, integument not very hard, squamose. Pseudorostrum 

 projecting in 2 rounded lobes, narrowly but deeply separated, the antero- 



