162 BULLETIN 201, UNITED STATES NATIONAL MUSEUM 



Endopod (fig. 60, e) of the second thoracic limbs somewhat long 

 and slender, fourth and fifth joints subequal, long and narrow, about 

 ten times as long as broad, sixth joint short, nail distinct. 



Third to the eighth thoracic limbs (fig. 60, /) long and slender; 

 carpopropodus of the endopod divided into three sub joints, the first 

 much longer than the combined length of the remaining two, second 

 longer than the third, dactylus about as long as the third ; exopods of 

 all the thoracic limbs with an acute spine on the outer distal corner of 

 the expanded basal plate. 



Fourth pleopod of the male (fig. 60, g) (in an immature specimen) 

 apparently consisting of one branch only ( ? the sympod plus the 

 endopod), longer than the fifth abdominal somite; exopod absent; 

 endopod apparently fused with the second joint of the sympod but 

 the setose side lobe, which is usually found at the base of the first joint 

 of the endopod, is clearly distinguishable and has four setae on the 

 inside margin and 7 or 8 on the outer margin, remaining part of the 

 endopod composed of 13 short equal joints, last joint terminated by 2 

 spines or setae. 



Sixth segment of the pleon about one-third longer than the fifth. 



Telson (fig. 60, h) slightly longer than the sixth segment of the 

 pleon ; slightly more than one and a half times as long as broad at the 

 base, narrowing to an apex, which is about one-third of the breadth 

 of the base; apex cleft, cleft about one-eighth of the length of the 

 telson, wide and triangular in outline, margins of the cleft armed with 

 about 10 teeth and a pair of plumose setae is situated at the base of the 

 cleft ; apical lobes armed with a single strong spine ; lateral margins 

 armed with about 25 spines, short, acute, and more or less equally 

 spaced, extending throughout their entire length. 



Outer uropod about V/2 times as long as the telson. 



Inner uropod shorter than the outer, with a single spine on the inner 

 margin near to the statocyst. 



Length of an immature male 18 mm. 



Type. — One immature male, U.S.N.M. No. 81267, from Albatross 

 station 4788, Bering Sea. 



Occurrence. — Bering Sea : Albatross station 4788, 1 immature male, 

 18 mm. (type). 



Distribution. — Known only from the type specimen collected in the 

 Bering Sea, off Bering Island, in 56 to 57 fathoms. 



Remarks. — This species may be distinguished by the combination 

 of characters afforded by the large reniform eyes, serrated outer 

 margin of the antennal scale, and the form and armature of the telson. 



