692 Corophium 



3 spiues along lower margin; flagellum more than half as long as peduncle, 

 6-jointed. Aüteuna 2 little longer than antenna 1, not very stout; penultimate 

 Joint of peduncle neavly cylindric, with 3 strong spines on margin, ultimate 

 rather shorter, with a spine beyond centre of lower margin. Gnathopod 1, 

 6*^ Joint widening a little distally, palm rather oblique, finger extending 

 very little beyond it. Gnathopod 2, finger with subapical denticle. Peraeo- 

 pods 1 and 2, 4*^^ Joint rather broad, 5*^ very short, finger subequal to 

 5*** and 6*^ combined. Peraeopod 5, 2^ Joint oval, the others very slender. 

 Üropod 3, peduncle very short, raraus broadly oval, fringed with 7 — 9 setae. 

 Telson twice as broad as long, transversely truncate at apex. Colour whitish, 

 dorsally banded with dark brown. L. 6 mm. — ö uuknown. 



North-Atlantic, Nortli-Sea, Skagerrak and English Channel (South- und West- 

 Norway up to the Trondhjemsfjord; South-England; West-France). Depth 11 — 19 m. 



C. acherusicum A.Costa ?1851 Audouinia acherusica {nom. nud.), (A.Costa 

 in:) F. W. Hope, Cat. Crost. Ital., p. 24 | 1857 Corophium acherusicum, A. Costa in: 

 Mem. Acc. Napoli, v. 1 p. 232 | 1893 C. a., A. DellaValle in: F. Fl. Neapel, v. 20 p. 364 

 t. 1 f. 11; t. 8 f. 17, 18, 20—41 j ?1898 C. a., Sowinski in: Mem. Soc. Kiew, v. 15 p. 455 \ 

 1897 C. bonellii (part.), (T. Stebbing in:) H. J. Hansen, Choniostom., p. 113, 114. 



Perhaps identical with C. bonellii (p. 691). 



Mediterranean; ti'opical Atlantic (Cuba); tropical Pacific (Hong Kong). 



C. eontractum Stimps. 1855 C. c, Stimpson in: P. Ac. Philad., v.7 p. 383 | 

 ?1881 C. c, (t. M. Thomson in: Tr. N. Zealand Inst., a 13 p. 220 t. 8 f. 9 1 1893 C. c, 

 A. Della Valle in: F. Fl. Neapel, v. 20 p. 374 | ? 1886 C. bonnellii, G. M. Thomson & Chilton 

 in: Tr. N. Zealand Inst., v. 18 p. 142. 



Possibly identical with C. bonellii (p. 691). L. 3^ — 4 mm. 



Pacific (Japan, New Zealand). 



C cylindrioum (Say) 1818 Podocerus cylindricus, Say in: J. Ac. Philad., v. In 

 p. 387 I 1873 Corophium cylindricum, (S. I. Smith in:) A. E. Verrill in: Rep. ü. S. Fish 

 Comm., v. 1 p. 370, 566 \ 1888 C. c, T. Stebbing in: Rep. Voy. Challenger, v. 29 p. 104 | 

 1893 C. c, A. Della Valle in: F. Fl. Napel, u 20 p. 376. 



North-Atlantic (from New Jersey to Vineyard Sound). 



C. dentatum Fr. Müll. 1864 C. d., Fritz Müller, Für Darwin, p. 51 i 1893 

 a d., A. Della Valle in: F. Fl. Neapel, ?;. 20 p. 375. 

 Brazil ? 



C. quadriceps Dana 1852 C. q., J.D.Dana in: P. Amer. Ac, v.2 p. 219 | 

 1853 & 55 C. ?q., J. D. Dana in: U. S. expl. Exp., v. 13n p. 836; t. 55 f. 8 | 1888 C. ?q., 

 T. Stebbing in: Rep. Voy. Challenger, v.29 p. 255 | 1893 C. q., A. Della Valle in: F. 

 Fl. Neapel, v. 20 p. 374. 



Probably a young form. L. about 2 mm. 



Harbour of Rio Janeiro. 



C. salmonis Stimps. 1857 C. s., Stimpson in: Boston J. nat. Hist., v.6 p. 514 | 

 1888 C. s., T. Stebbing in: Rep. Voy. Challenger, v. 29 p. 303 | 1893 C. s., A. Della Valle 

 in: F. Fl. Neapel, «.20 p. 375. 



Puget Sound. 



C. spinieorne Stimps. 1857 €. s., Stimpson in: Boston J. nat. Hist., v. 6 p. 514 | 

 1857 C. s., Stimpson in: P. Calif. Ac, vA p. 89 \ 1893 C. s., A. DellaValle in: F. Fl. 

 Neapel, v. 20 p. 375. 



L. 10 mm. 



San Francisco Bay. 



