Eyblis 



115 



Lower margin of side-plate 1 (Sars), or side-plate 1 and 2 (Smith) serrate 

 between marginal setae. Corneal leuses wauting (Sars, not mentioned by 

 Smith). Antenua 1 scarcely reachiug beyond peuultimate Joint of pedimcle of 

 autenna 2, flagellum in o 6-jointed, shorter than peduncle; antenna 2 little more 

 than half as long as the body, ultimate Joint of peduncle shorter than penultimate. 

 Gnathopod 1 with 5*^ Joint scarcely if at all longer than 6*^ (Smith and Sars 1885, 

 but considerably longer in Sars's figure). Peraeopod 5, 2<^ Joint much expauded 

 and reaching to the end of the 5*^ Joint, anterior corner rounded off (Sars), 

 anterior and inferior margins evenly arcuated (Smith), ö*i* Joint about as 

 long as 3*^ and 4*^ combined and about as long as the Q^K Uropod 3 with 

 confronted edges not having any distinct serration. Telson subquadrate, about 

 as long as broad, converging (rapidly, Smith) to distal margin, cleft extending 

 about to the middle (Sars), rather more than half its length (Smith and Sars 1885). 

 Body highly pellucid, and nearly colourless (Sars), specked and mottled on 

 side-plates; 2*^ Joint of peraeopods 3 — 5, and sides of pleon with crowded points 

 of dark pigment (Smith). L. Q 8 — 12 mm. 



Arctic Ocean and Xorth-Atlantic (Spitzbergen, West- and Xorth-Xorway, deptli 

 659 — 1193 m; off Vineyard Sound and Buzzard Bay, deep water). 



9. B. kallarthra Stebb. 1886 B. Jcallarthrus, T. Stebbing in: P. zool. Soc. 

 London, p. 4 ] 1887 B. k., T. Stebbing in: Tr. zool. Soc. London, v. 12\a p. 199 t. 38 

 1893 Ampelisca k, A. DellaValle in: F. Fl. Neapel, u 20 p. 476. 



Lower margins of side-plates 1 and 2 sen-ate, side-plate 4 produced back- 

 wards with sinuate lower margin, not observed in any other species. The 

 4 corneal lenses surrounded with dark pigment. 

 Antenna 1 scarcely more than reaching end of pen- 

 ultimate Joint of peduncle of antenna 2, flagellum in 

 Q 11-jointed, a little longer than peduncle; ultimate 

 Joint of peduncle of antenna 2 rather shorter than 

 penultimate, antenna 2 not quite % length of body. 

 Gnathopod 1, 5**' Joint much longer than 6^^. Peraeo- 

 pods 1 and 2, 6^^ Joint considerably longer than 5*^^; 

 peraeopod 5 (Fig. 27) with 2^ Joint produced fully to 

 the end of the 5*^ the front and lower margins 

 forming a gently continuous curve, 5^^ Joint considerably 

 longer than 3^ and 4^^ combined and much longer 



than 6^^. Uropod 3 with confronted margins of rami mmm m. 7thjoiut 



serrate and angled near the base. Telson slightly 

 longer than broad, a little rounded, cleft extending 

 a little beyond the middle. Branchial vesicles with 

 secondary lamellae on both sides. L. Q 10 mm. 



Singapore Strait. 



10. B. lepta (Giles) 1888 Ampelisca l, G. M. Giles in: J. Asiat. Soc. Benga], 

 f. 57 p.223 t. 8, 9 | 1893 A. l, A. DellaValle in: F. Fl. Neapel, v.20 p. 894. 



The 4 corneal lenses suiTounded with dark brown pigment. Antenna 1 

 reaching a little beyond peduncle of antenna 2, flagellum with 10 veiy slender 

 joints; antenna 2, -/g leng-th of body, ultimate Joint of peduncle a little shorter 

 than penultimate, flagellum 14- or 15-jointed. Peraeopod 2 unusually elongate. 

 Peraeopod 5, 2^ Joint descending below the 4*^. Uropod 3, rami apparently 

 serrate on confronted margins and angled near the base. Telson deeply cleft, 

 semilunar. Colour ivory white. Branchial vesicles of great length, with 

 conspicuous accessoiy laminae on each surface. L. about 6 mm. 



Head of Bay of Bengal. Depth 195 m. 



8* 



Fig. 27. 

 B. kaUarthra. 



Peraeopod 5. 



