Eurystheus 617 



oblong, palm nearly transverse, but sti'ongly rounded at the äugle or bisinuate; 

 finger strongly curved, much longer than the palm, closing against inner 

 surface of 6*^^ Joint. Gnathopod 2 in 9 little stronger thau gnathopod 1, 

 6^^ Joint longer than 5*'\ oblong oval, not broad, palra detiued by a distinct 

 angle, its margin minutely but irregularly crenulate, tinger a little overlapping 

 the defining angle. Peraeopods 1 and 2, 2'^ Joint a little widened, nan'owly 

 oval. Peraeopod 3, 2*^ Joint wide proximally, narrowing distally. Peraeopod 4 

 longer, 2^ Joint longer but narrower. Peraeopod 5 similar to peraeopod 4, 

 but of larger dimensions. üropod 3, peduncle longer than the equal, acute 

 rami. Telson sraall, as broad as long, apical margin slightly concave with 

 a couple of spinules on surface ridge at each side. Colour whitish with 

 light brown transverse bands (Sars). L. 9 scarcely exceeding 3, d 4 mm. 



JFirth of Clyde; Christianiafjord, depth 38 m; Bosphorus, depth 36 m. 



12. E. ohiltoni (G. M. Thoms.) 1897 Maera c, Gr. M. Thomson in: Ann. nat. 

 Hist., ser. 6 f. 20 p. 447 t. 10 f. 1 — 5 | 1899 Gammaropsis c, T. Stebbing in: Ann. nat. 

 Hist., ser. 7 v. 3 p. 350. 



Body slender, rather corapressed. Head, lateral lobes produced into 

 an obtusely pointed process. Side-plate 1 elongated, widening and rounded 

 below, produced forward at their infero-anterior angle. Eyes subreniform, 

 broader below than above, close to margin of lateral lobes of head. Antenna 1, 

 1^* Joint stout, 2*^ about twice as long as 1^*, 3"^ about % as long as 2*; flagellum 

 unknown; accessory flagellum nearly as long as ultimate Joint of peduncle. 

 Antenna 2, peduncle subequal to peduncle of antenna 1, ultimate and pen- 

 ultimate joints of peduncle subequal; flagellum slightly longer than ultimate Joint. 

 Mandibular palp, 2"^ and 3*^ joints widening distally, 2^ longer than 3*^, 3^ with 

 long setae on broad apex. Maxilla 1, inner plate short, acute, without setae, 

 outer with 10 spines, palp apparently 3-jointed, the middle Joint short (?). 

 Maxilla 2, inner plate fringed with short setae, chiefly round the inner 

 margin. Maxillipeds normal, 4*^^ Joint of palp short- and rounded, with stout 

 apical setae, but without a claw. Gnathopod 1 small, 4''^ Joint produced 

 into an acute tip (in figure rotundo-quadrate at apex); 5*^ long, widening 

 a little distally, 6**^ shorter, narrow ovate, palm oblique, dentate (no teeth 

 in figure); finger curved, acute, about 7» ^s long as 6*^ Joint (in figure 

 subequal), with a few minute denticulations along inner edge. Gnathopod 2 

 very large, 4*^ Joint produced forward and channelled; 5^^ large, triangulär, 

 cup-shaped, as broad as long; 6*^ veiy large, bind margin straight, front 

 very convex, producing a great bulge a little way from the base, ending in 

 a small tooth at the finger-hinge; palm nearly transverse, with large ti'iangular 

 median tooth, followed by a cavity and ending with a slightly concave margin^ 

 finger strong, folding down a little beyond the palm, Peraeopods 1 and 2 

 slender, 3*^ stout, 4*"^ and 5*^ successively longer, rather slender. üropod 1 

 the longest, peduncle with large apical spine, rami subequal, shorter than 

 peduncle. üropod 2, inner ramus subequal to peduncle, rather longer than 

 outer. üropod 3 shortest, rami subequal, rather shorter than peduncle. Telson 

 subquadrate, sides converging, a rounded emargination extending Ys of the 

 length, between 2 obtuse apices, each with a spinule. L. 4 — 5 mm. 



South-Pacific (New Zealand). Depth 15 m. 



13. E. maculatus (Johnst.) 1827 Gammarus m., G. Johnston in: Zool, 

 J., V.3 p. 176 i 1888 Gammaropsis m., T. Stebbing in: Rep. Voy. Challenger, v.29 

 p. 131, 286 I 1893 Frotomedeia maeulata (pai-t.), A. Della Valle in: F. Fl. Neapel, ».20 



