688 Corophium 



as io C. nobile (p. 687), except that rami of uropods 1 and 2 are without 

 spines on inner margin. Telson and colour as in C. nobile. L. Q 7, d 8 mm. 



CasjDian Sea. Depth 10 — 80 m. 



4. C. spinulosum 0. Sars 1896 C. s., G. 0. Sars in: Bull. Ac. St.-Petersb., 

 ser. 5 v.i p. 481 t. 12 f. 18— 25. 



Segments of pleon distinct, 4*^ — 6**^ with spinules along bind margin, 

 4*^ and 5*^ witb lateral spinules. Head with frontal margin only slightly 

 convex.' Side-plate 1 witb 4 apical setae and several setules. Eyes very 

 small, rounded. Antenna 1 slender, sparsely setose, in Q nearly balf as 

 long as body; 1^* Joint about as long as 2^, witb 2 spines on lower margin; 

 ■flagellum rather longer than peduncle, about 14-jointed. Antenna 2 in d, 

 penultimate Joint of peduncle witb large process, broad at base, with small 

 denticle on its inner side, its acute apex chelately crossing tbe small apical 

 tooth of the ultimate; in 9 process of penultimate Joint much smaller, reaching 

 about to middle of ultimate, which is almost simply cylindric; flagellum 

 rather shorter than ultimate Joint of peduncle. Gnathopod 2, finger smooth, 

 with only a few slender hairs. Peraeopods 1 and 2, 4**^ Joint slightly expanded, 

 not very setose; finger very long and slender, rather longer than 6*^*^ Joint. 

 Peraeopod 5, 2*^ Joint densely setose, the slender terminal joints having 

 spinules as well as setae. Uropods 1 and 2 with numerous spines on both 

 margins of peduncle and rami. üropod 3, the ramus armed with spines as 

 well as setae. Telson ending obtusely (in figure), distinguished by a rather 

 conspicuous erect spine on each side of its base. L. 9 9*5 mm. 



Caspian Sea. Depth 45 m. 



5. C. affine Bruz. 1859 C. a., ß. M. Bruzelius in: Svenska Ak. Handl., u. ser. 

 V. 3 nr. 1 p. 16 i 1876 C. a., A. Boeck, Skand. Arkt. Amphip.. v. 2 p. 629 t. 28 f. 7 | 1893 

 Ca., A. DellaValle in: F. Fl. Neapel, u 20 p. 371 t. 55 f. 60 | 1894 Ca., G. 0. Sars, 

 Crust. Norway, v. 1 p. 618 t. 221 f . 2 j ? 1898 C. a., Sowinski in: 31em. Soc. Kiew, v. 15 

 p. 457 I 1869 C. tenuicorne ($), A. M.Norman in: Eep. Brit. Ass., 3Ieet. 38 p. 286. 



Body rather slender, pleon segments 4 — 6 distinct. Head without 

 distinct rostrum; lateral lobes prominent, acute. Eyes represented by a 

 small patch "of opaque white pigment on each side. Antenna 1 rather long 

 and slender; 1^* Joint narrowing distally, with 6 recurved spines at base, 

 and 4 slender spines below, 2*^ very slender, scarcely shorter than P*; flagellum 

 less than half as long as peduncle, 6-jointed. Antenna 2 in d about % as 

 long as body; penultimate Joint of peduncle very large, distal tooth quite small, 

 inner tooth a small tubercle; ultimate Joint not nearly half as long, nan'ow, 

 with sinuous lower margin, produced distally in a tooth-like process; 1^* Joint 

 of flagellum with distal nodiform projection. Antenna 2 in 9 rather feeble, 

 not longer than antenna 1 ; glandular-process at base very long; antepenultimate 

 Joint of peduncle with Single spine, penultimate simply cylindrical with 3 

 slender spines, ultimate more than half as long, with 4 spines distributed. 

 Gnathopod 1, 6*^ Joint very nan'ow, not at all widened distally; finger 

 denticulate, with prominent subapical tooth. Gnathopod 2 as in C. crassicorne 

 (p. 690); finger with denticle near apex. Peraeopods 1 and 2, 4*^ Joint little 

 expanded; finger a little longer than ^^^ and 6*^ joints combined. Peraeopod 5 

 very long and slender, 2^ Joint very little expanded, its bind margin slightly 

 concave. Uropods 1 and 2, rami slender, apical spines unusually long. 

 Uropod 3, peduncle longer than broad, ramus linear, setae almost confined 



