618 Eurystheus, Podoceropsis 



p. 436 t. 14 f. 28 — 40; t. 57 f. 8 — 11 | 1855 Gammarus (Gamniaropsis) erythrophthalmus, 

 W. Liljeborg in: Vetensk. Ak. Handl., 1853 p. 455 | 1871 Gammaropsis e. (part.?), A. 

 Boeck in: Forh. Selsk. Christian., 1870 p. 241 | 1876 G. e. (part.?), A. Boeck, Skand. 

 Arkt. Amphip., v.2 p. 581 t. 25 f. 6 | 1889 G. e., Hoek in: Tijdschr. Nederl. dierk. Ver., 

 ser. 2 v.2 p. 226 t. 9 f. 4k | 1894 G. erythrophthalma, G. O. Sars, Crust. Norway, v.l 

 p.558 t. 198 I 1895 G. e., A. O.Walker in: Ann. nat. Hist., ser. 6 u 15 p. 470 | 1859 

 ^Mfonoe e., R. M. Bruzelius in : Svenska Ak. Handl., n. ser. «. 3 nr. 1 p. 27 | ?1866 Maera e., 

 Cam. Heller in: Denk. Ak. Wien, v. 26 ii p. 42 | 18ö6 EurystJieus tridentatus (nom. nud.), 

 Bäte in: R,ep. Brit. Ass., Meet. 25 p. 58 | 1857 E. t., Bäte in: Ann. nat. Hist., ser. 2 

 V. 19 p. 143 ] 1862 E. erythrophthalma -\- E. bispinünanus -j- Gammarus maculatus, 

 Bäte, Cat. Amphip. Brit. Mus., p. 196 t. 35 f. 7; p. 197 t. 35 f. 8; p. 223 \ 1882 Gamma- 

 ropsis melanops, G. 0. Sars in: Forh. Selsk. Christian., nr. 18 p. 111 t. 6 f. 5 [ 1894 G. m., 

 G. 0. Sars, Crust. Norway, v. 1 p. 560 t. 199 f. 1. 



Body rather slender, 4*^ pleon segment (Boeck) armed with 2 minute 

 medio-dorsal teeth. Head, lateral lobes acute. Side-plate 2 largest in ö. 

 Pleon segment 3, postero-lateral corners quadrate with small tooth, margin 

 above more or less bulging. Eyes rather large, oval reniform, red or very 

 dark. Antenna 1, 1^* Joint subequal to 3^, or shorter; flagellum 10 — 15-jointed; 

 accessory flagellum 4— 6-jointed. Antenna 2 rather shorter. Upper lip 

 produced acutely or obtusely in front. Gnathopod 1 slender; 5*^ and 6*^ joints 

 subequal; palm ill-defiued; finger denticulate (Bruzelius). Gnathopod 2 much 

 larger; 2^ and 5*^ joints robust in ö, 6*^ with palm oblique, having 3 (2?) 

 teeth or tubercles in the d, 2 in the 9. Peraeopods 3—5, 2^ Joint well 

 expanded or narrowly oval. Uropod 3, rami about as long as peduncle. 

 Telson as broad as long, with a spine and usually setules on each side of 

 apex. Colour pale yellow with dusky bands. L. 6 — 12 mm. 



Arctie' Ocean and North-Atlantic (Greenland, depth 38 — 112m; from Norway 

 to France; Azores). 



5. Gen. Podoceropsis Boeck 



1861 Podoceropsis (Sp. un.: P.sophia), A. Boeck in: Forh. Skand. Naturf., Made 8 

 p.666 I 1876 P., A. Boeck, Skand. Arkt. Amphip., v.2 p. 583 | 1888 P., T. Stebbing in: 

 Rep. Voy. Challenger, v.29 p. 1108 | 1893 P. (part.), A. Della Valle in: F. Fl. Neapel, 

 V. 20 p. 451 I 1894 P., G. 0. Sars, Crust. Norway, v. 1 p. 574 ] 1862 Noenia, Bäte 

 (& Westwood), Brit. sess. Crust., v. 1 p. 471 [ 1862 Naenia (non J. F. Stephens 1829, 

 Lepidoptera!), Bäte, Cat. Amphip. Brit. Mus., p. 271 ] 1871 Xenoclea (Sp. un.: X. batei), 

 A. Boeck in: Forh. Selsk. Christian, 1870 p. 234. 



Like Eurystheus (p. 610), except that antenna 1 has no accessory 

 flagellum or only a rudiment of it, and that gnathopod 2 in the ö has 

 the b^^ Joint always short and in the 9 has the 6*^ Joint conspicuously 

 wider than that of gnathopod 1. 



5 species. 



Synopsis of species: 



Eyes wanting — 2. 

 Eyes present — 3. 



f Gnathopod 2, palm oblique 1. P. abyssi p. 619 



\ Gnathopod 2, palm transverse 2. P. kerraadeci . . . . j). 619 



Peraeopods 1 and 2, 6th joint very long . . 3. P. lindahlii p. 619 



Peraeopods 1 and 2, 6th joint not very long — 4. 



«1 



( Side-plate 5 not as deep as side-plate 4 . . . 4. P. sophia p. 620 



\ Side-plate 5 fuUy as deep as side-plate 4 . . 5. P. nitida p. 620 



