CRUSTACEA MALACOSTRACA. II. 53 



second joint about as deep as long; third joint twice as long as second, with the most proximal part 

 feebly thickened below. 



Remarks. This species is allied to T. finmarchicus G. O. S. and T. mixtus u. sp., but differs 

 considerably in the antenuulae, which have much longer terminal setae and the first joint in the female 

 very differently shaped; furthermore the exopod of the uropods seems to be one-jointed in T. pro- 

 /undus, while it is distinctly two-jointed in the two other species. 



Occurrence. T. profundus has been taken by the "IngolP at a single station. 



South of the Davis Strait: St. 38: Lat. 59i2' N., Long. 51 05' W., 1870 fm., temp. 1.3; 4 spec. 



32. Typhlotanais spinicauda n. sp. 

 (PI. V, figs. 6a-6h.) 



Female (without marsupium). Body somewhat slender, seven times as long as broad. 

 Carapace (fig. 6 a) somewhat longer than the two following segments combined and considerably longer 

 than broad, seen from above subcylindrical excepting its anterior third, which has the lateral margins 

 converging forwards and distinctly convex; the anterior end almost two-thirds as broad as the base, 

 with the frontal process of moderate size, acute. 



Antennulse (figs. 6 a and 6c) conspicuously shorter than the carapace, somewhat robust. First 

 joint more than half as long again as the two other joints combined, seen from the side little more 

 than three times as long as deep and tapering very moderately; seen from above not quite two and 

 a half times as long as broad and tapering regularly from base to end. Second joint short and slightly 

 longer than deep; third joint nearly three times as long as the second, and its terminal setae seem to 

 be a good deal shorter than the joint. Antennae of normal length; third joint not thickened; fourth 

 joint twice as long as the penultimate; terminal setae considerably longer than those of the antennulae. 



Chelipeds (figs. 6b and 6d) of moderate length and thickness. Basal joint with the proximal 

 protuberance scarcely as long as deep and its posterior margin not far from the front lower angle of 

 second segment; carpus much longer than the basal joint, a little more than two and a half times as 

 long as deep. Chela small, considerably shorter than the carpus, a little more than three times as 

 long as broad; movable finger as long as the anterior margin of the hand; fixed finger near the base 

 conspicuously broader than the movable. 



Thoracic segments, seen from above, cylindrical with parallel margins. Second segment half 

 as long as the third, with a conspicuous, oblong-triangular, acute, horizontal ventral process originating 

 somewhat behind the front end of the segment (fig. 6b). Third and fourth segments with their 

 front lateral angles produced in small, acute triangles only visible from the side (fig. 6b). Thoracic 

 legs short. Second pair (fig. 6e) somewhat slender with the setae short; sixth joint as long as the 

 fifth and half of the fourth combined ; seventh joint with claw a little shorter than sixth joint. Third 

 pair (fig. 6f) considerably shorter and distinctly thicker than the second, with short setae; sixth joint 

 a little shorter than the two preceding joints combined, seventh joint with claw conspicuously more 

 than half as long as sixth joint. Sixth pair (fig. 6g) with the second joint somewhat expanded, slightly 

 more than twice as long as broad; fourth and fifth joints rather broad and fourth joint with a distinct, 



