195 



exopodite, specimens which bear a few similar spines on the basipodite 

 have also been recorded. 



Distribution: A panoceanic species known from the tropical and 

 southeastern parts of the Atlantic Ocean, the southern and tropical regions 

 of the Indian Ocean, the northwestern part of the Pacific Ocean, the 

 deepwater parts of the Bering Sea and the Sea of Okhotsk, the central and 

 southern regions of the Pacific Ocean, and the Antarctic (up to 66° S). In 

 the tropical regions it reaches 200-250 m and in the northwestern regions 

 of the Pacific Ocean is found in catches from 500-1,000, 1,000-3,000, ' 

 2,000-2,500, and 2,000^,000 m. It is most common in the upper part of 

 the bathypelagic zone at a depth of 1,000-2,000 m. 



18. Scina wagleri Behning, 1939 



Behning, 1939: 357.— orientalis Bulycheva, 1955: 1049. 



Length of sexually mature specimens 5.5-7.5 mm. 



The body is smooth and without a dorsal keel. The pereon is flattened 

 dorsoventrally; it appears oval when viewed from above. Antennae I are 

 shorter than the pereon. 



The outer lobes of the maxillipeds are long, strong, and tapering 

 distally, with a pointed apex; the inner lobes are 2/11-2/5 the length of 

 the outer and bear two apical setae. 



Pereopods I and II are weak and long with thin, straight claws. 

 Pereopods III and IV are slightly longer than the preceding pair, with 

 narrowly oval or rod-shaped distal segments; the claws are very long 

 (up to 3/4 the length of the 6th segment) and straight; the 2nd segment 

 of pereopods V is coarsely denticulate on the anterior margin and more 

 finely denticulate on the posterior margin; its anterior distal angle is 

 stretched into an acute process reaching beyond the distal margin of 

 the 3rd segment up to 1/5-1/3 the length of the 4th segment; the 5th 

 segment is longer than the 4th or the 6th, which are roughly equal in 

 length; the claw is short and almost straight. Pereopods VI are shorter 

 than pereopods V and the claws short. Pereopods VII are very short, 

 almost half the length of pereopods VI; the claws are short and slightly 

 curved or straight. 



The uropods are thin, with fairly well-developed exopodites; the 

 basipodites are slightly longer than the endopodites or equal to them. 

 Uropods I bear on their posterior margin long and thin denticles while 

 uropods II have small spines. The telson is oblong-triangular with a 

 rounded tip. 



Notes: Bulycheva (1955) found two specimens of sexually imma- 

 ture scinids in the Kuril-Kamchatka region of the Pacific Ocean, which 

 she designated as a new species, S. orientalis. She provided neither a 

 diagnosis nor an illustration of the new species and restricted herself 

 to pointing out its differences from S. wagleri. These differences are: 



