CRUSTACEA MALACOSTRACA. II. jl 



as the two preceding- segments combined, somewliat narrower than fifth segment, and posteriorly 

 emarginate. — Uropods (figs. 2a and ah) sHghtly shorter than the abdomen; peduncle about two and 

 a half times as long as broad; endopod very long with thirteen joints, the first joint conspicuously 

 thicker than tiie second and third and as long as these two combined; exopod very small, two-jointed, 

 with the proximal joint shorter than the distal. 



Length 20""". 



Remarks. Though new species of this family as a rnle ought not to be founded on adult 

 males, I venture to establish a new species on the specimen described, because it is not only charac- 

 teristic but ver\- much larger than any specimen of Tanaidse hitherto captured. The animal when 

 hauled up from the sea was quite white. 



Occurrence. The "Ingolf" has taken this species at a single station. 



Davis Strait: St 36: Lat. 6i°5o'N., Long. 56° 21' W., 1435 fm., temp. 1.5°; i spec. 



Heterotanais o. o. s. 



Of this genus nine species have been established. The material at hand contains onl\- a .single 

 probably new species. 



12. Heterotanais groenlandicus n. sp. 

 (PI. L figs. 5a-5g.) 



1887. Hcterofaiiiiis liiiiicola H. J. Hansen, Vidensk. Medd. Naturh. Forening i Kobenhavn for 1S87, 



p. 178 (Probably not //. (Parafanais) liinicola Harger). 



Female. The body (fig. 5a) about six times as long as broad. — Carapace only a little 

 longer than the two anterior thoracic segments combined, a little longer than broad, anteriorlv not 

 fully half as broad as somewhat before the posterior margin (fig. 5 b). 



The eye-lobes are considerably produced, distalh' not angular but rounded (fig. 5 c); the eyes 

 are moderately large, black, but the black pigment renders it impossible to count the ocelli, a couple 

 of which are seen at the hind margin of the black spot. — The antennulcC (figs. 5 a and 5 c) are a 

 little shorter than the carapace, somewhat slender; first joint somewhat longer than the two others 

 combined, almost four times as long as deep; third joint about twice as long as the second. — An- 

 tennas somewhat slender; fourth joint (formed by fnsion of fourth and fifth joints) only as long as the 

 two preceding joints combined. 



The chelipeds (fig. 5 c) are somewhat robust; the carpus is almost twice as long as deep. The 

 chela is somewhat longer than the carpus and somewhat more than twice as long as broad; the 

 movable finger is much shorter than the hand; the fi.xed finger (fig. 5d) is somewhat expanded on 

 the incisive side with about three low protuberances and near the end rather broad and distally rect- 

 angular, while the very short apical part of the finger is slender and marked off from the inner 

 expansion. 



Second pair of legs (fig. 5 c) with a very long seta from the upper distal angle of fifth joint; 

 sixth joint about as long as fifth and fourth joints combined and a little shorter than seventh joint 

 with claw; seventh joint a little shorter than the claw. Third pair of legs (fig. 5 e) have the seventh 



