612 Eurystheus 



2. E. afer (Stobb.) 1888 Gammaropsis afra, T. Stebbing in: ßep. Voy. Challenger, 

 V.29 p. 1097 t. 113 I 1893 Proloincdeia? a. (p&vt), A. DellaYalle in: F. Fl. Neapel, 

 r.20 p.440. 



9 . Head, lateral lobes iiaiTOw, . acute, moderately produced. Side- 

 plate l not produced forward. Pleon segment 3, postero-lateral corners 

 slightly rounded. Eyes oblong, vertical, close to margiu of head, Aiitenna 1, 

 2*^ Joint much longer thau 1^* or 3'^; accessory flagellum 6-jointed. Antenna 2, 

 ultimate Joint of peduncle rather longer than penultimate; flagellum 13-jointed. 

 Upper lip smoothly rounded. önathopod 1, 2*^ Joint with a distal widening; 

 5*** Joint nearly as long and distally nearly as broad as 6*^; 6^^ oblong 

 oval, palm slightly oblique, shorter than hind margin, finger seiTulate, matching 

 palm. Gnathopod 2, 5*^ Joint short, cup-shaped, 6*** rather broadly oval, with 

 palm ot)lique, very sinuous, defined by a simple angle, finger closing against a 

 palmar tooth on the surface. Peraeopods 1 and 2, 4**^ Joint much longer than 5*^. 

 Peraeopod 3, 2*^ Joint above almost as broad as the length, narrowing distally. 

 Peraeopod 5, 2^ Joint not much expanded, but broader above than below; 

 finger short. Uropod 3, peduncle rather longer than the short rami, inner 

 a little shorter than the outer. Telson scarcely longer than broad, with some 

 plumose setules on lateral margins and a spine at each angle of base of 

 triangulär apex. L. 7 mm. — ö unknown. 



Southern Indian Ocean (Cape Agulhas [South-AfricaJ). Deptli 270 m. 



3. E. thompsoni (A. Walker) 1898 Maeroides t, A. O. Walker in: P. Liverp. 

 biol. Soc, ul2 p. 283 t. 16 f. 3-6 | 1899 Gammaropsis t, T. Stebbing in: Ann. nat. 

 Hist., ser. 7 i?. 3 p. 350. 



9 unknown. — ö. Pleon segmeuts 4 and 5 each with 2 dorsal teeth 

 on hind margin, a setule at base of each tooth. Head, lateral lobes acute. 

 Side-plates of average depth. Pleon segment 3, postero-lateral corners produced 

 to a small tooth, margin above bulging. Eyes large, long oval, dark, enteijng 

 lateral lobes of head. Antennae 1 and 2 about half as long as body. Antenna 1, 

 1^* Joint little more than half as long as 2^, as long as 3^; flagellum subequal 

 to peduncle; accessory flagellum 7-jointed. Antenna 2, ultimate Joint of peduncle 

 longer than penultimate; flagellum subequal to peduncle. Gnathopod 1, 5*^^ Joint 

 as long as 2*^ longer than the oval, setose 6*^ Gnathopod 2 very power- 

 ful; 5*^ Joint as broad as long, cup-shaped, 6**^ large, oblong, palm scarcely 

 oblique, defined by an angular prominence, and having ^, submedian double 

 tooth and another larger one near the hinge of the finger, across which it projects 

 a pointed lobe on the outer surface; 5*^ and 6*^ joints both setose on hind 

 margin; finger (in figure) stroug, a little overlapping the palm. Peraeopods 

 strong, 4*^ and 5*^ described as equal; 2^ Joint broad at base. distally naiTowing, 

 hind margin slightly serrate. üropods 1 — 3 extending back the same distance. 

 Uropod 3, peduncle nearly as long as the equal spinöse rami. Telson widely 

 but not deeply cleft, a spine and a seta at the end of each division, figured 

 only in lateral view. Colour yellowish with grey dorsal freckles and darker 

 spots on 2^ Joint of peraeopods. L. 10 mm. 



Puget Sound. 



4. E. crassipes (Hasw.) 1880 Moera c, Haswell in: P. Linn. Soc. N. S.Wales, 

 ».5 p. 103 t. 7 f. 2 I 1899 Gammaropsis c, T. Stebbing in: Ann. nat. Hist., ser. 7 v.3 

 p. 350 I 1893 Ceradocus fasciatus (pari.)?, A. DellaValle in: F. Fl. Neapel, d.20 p.723. 



Pleon segment 4 with 3 small distant teeth on hind dorsal margin. 

 Head, lateral corners not acute. Side-plates all small, 6*^ like 5*^, scarcely 

 smaller. Pleon segment 3, postero-lateral corners quadrate, not acute. Eyes 



