80 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 37. 



long. 179° 14' E. ; station 4781, on the way from " Petrel Bank," 

 Bering Sea, to McDonald Bay, Agattii Island, Aleutians, by the pas- 

 sage east of Semisof)Ochnoi and Amchitka Islands, at lat. 52° 14' 30" 

 N. ; long. 174° 13' E. 



Depth. — Three hundred and forty-four to four hundred and eighty- 

 two fathoms in fine gray sand and pebbles, in green and brown sand, 

 and in broken shells. 



JEGA MAGNOCULIS, new species. 



Body ovate, about twice as long as wide (11 mm. : 21 mm.). Sur- 

 face smooth. Color, in alcohol, yellow. 



Head wider than long, 2^ mm. long by 5i mm. wide. Front pro- 

 duced in a small median point, separating the basal articles of the 

 first antenna?. Eyes large, oval, occupying almost the entire surface 

 of the head, and separated from each other by a distance equal to 

 half a millimeter. The first pair of antennae have the two basal ar- 

 ticles not dilated, and subequal; the third is narrow, elongate, and 

 equal in length to the first two articles taken together ; the flagellum is 

 compo.sed of eighteen articles. The first antennas 

 extend to the posterior margin of the first thoracic 

 segment. The second antennae, with a flagellum 

 of twenty-one articles, extend to the posterior mar- 

 gin of the third thoracic segment. The frontal 

 ^'nocdl^^'' H rro lamina is conical, with the distal end flat and 

 AND FiBST TWO sEG- ovate, tlic proxlmal end produced to a point- 

 MENTs OF THORAX. ^j^^ scgmcuts of thc thorax are subequal. the 

 last one being slightly shorter than the others. 

 The epimera are large, subquadrate, with the outer post-lateral angle 

 acute and produced posteriorly in the last three segments beyond the 

 posterior margin of the segments. 



The first segment of the abdomen is almost entirely covered by 

 the seventh thoracic segment, especially in the middle dorsal region; 

 the following three segments are subequal; the fifth segment is 

 slightly longer in the middle dorsal region; the sixth or terminal 

 segment is rounded, with the apex produced in a small point, on either 

 side of which the posterior margin is serrulate. The uropoda extend 

 a little beyond the terminal abdominal segment; the inner branch 

 is slightly longer than the outer branch, is also wider and has the ' 

 posterior margin obliquely truncate, with the outer angle produced I 

 acutely ; the outer branch is ovate with the posterior extremity acute. I 

 Both branches have the margins serrulate. 



The first three pairs of legs are prehensile. There is one small i 

 spine at the distal extremity of the propodus, and one larger spine | 

 on the carpus. A few small spines are also on the merus. The last | 



