CRUSTACEA MALACOSTRACA. II. 15 



Together with the specimen described a very young specimen, measuring only 5.7 mm. and 

 with seventh pair of thoracic legs not developed, was taken. It shows several peculiarities due to 

 its very young age, and among these one may be pointed out, viz. that the lower margin of the sixth 

 joint of second legs has only 5 spines; besides it has a spine at the lower distal angle of fourth joint 

 of the same legs, but this feature may be interpreted as variation. 



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



Denmark Strait: St. 10: Lat. 64° 24' N., Long. 28 50' W., 788 fin., temp. 3.5°; 1 subadult and 1 very 



young specimen. 



Besides the "Valorous" took the species at the following place. 



South of Davis Strait: Lat. 59 10' N., Long. 50 26' W., 1750 fin. 



Distribution. According to the English authors quoted this species was taken by the 

 "Valorous" at two stations situated considerably South of the Denmark Strait, viz.: Lat. 56°n' N., 

 Long. 37 41' W., 1450 fm., and Lat. 55° 10' N., Long. 25 58' W., 1785 fin. 



5. Apseudes gracillimus n. sp. 



(PI. I, figs. 4 a— 4 e). 



Subadult Female. Body and appendages still more slender than in A. gracilis. — Cephalo- 

 thorax nearly as in that species, but the eye-lobes more produced. The carapace without transverse 

 furrow. 



The antennulge (fig 4a) as long as the carapace and the two anterior free segments combined; 

 first joint slender, about three times as long as the second, without serration on the inner margin. 

 Outer flagellum 17-jointed, about as long as the peduncle and more than two and a half times as 

 long as the 4-jointed flagellum. — The antennae almost as long as the antennular peduncles; flagellum 

 8-jointed; the squama reaches beyond the end of the penultimate joint of the flagellar peduncle. 



The chelipeds very slender (fig. 4c) and their joints without spines or serration on the lower 

 (posterior) margin. Second joint is considerably curved, long, only a little shorter than the carpus, 

 five times as long as broad; carpus with the lower margin only somewhat less than twice as long 

 as that of the ischium. Chela four times as long as broad, with the posterior margin very concave; 

 the movable finger twice as long as the front margin of the hand and considerably longer than the 

 fixed finger, which has about 4 setae along the distal half of its incisive margin but no serration or 

 setigerous area. 



Second thoracic segment (fig. 4a) has the first joint of the legs triangular with the front 

 margin nearly transverse and only the terminal angle produced slightly forwards as an acute denticle. 

 The four posterior segments have the lateral processes considerably produced, distally slender, acute, 

 and no produced angles from their proximal part; the processes on the lower surface of the segments 

 conspicuous or even rather long. -- Second pair of legs (fig. 4 d) slender, second joint with a spine on 

 the lower distal angle; fourth joint conspicuously longer than the sum of the two following joints 

 and with a spine on the lower distal angle; fifth joint about half as long again as broad, slightly 

 longer than the sixth, with a terminal spine above and two spines on the lower margin; sixth joint 



