CRUSTACEA MALACOSTRACA. II. 77 



the two posterior abdominal segments combined; peduncle somewhat or considerably less than twice 

 as long as deep, about half as long as the first joint of the endopod; second joint of the endopod 

 slightl)- or a little shorter than the first; exopod distinctly more than half as long as first joint of the 

 endopod. 



Length of a large female without marsupium 2.8""'", of a female with marsupium 2.15™"'. 



Subadult Male. Antennulse only four-jointed, but the two proximal joints are considerably, 

 the third joint somewhat, thicker than in the female. The abdomen proportionately somewhat longer 

 and thicker than in the female. — Length 2.1—2.3""". 



Remarks. L.inermis differs from all preceding species of this genus by having the first an- 

 tennular joint shorter in proportion to its depth and to the length of second joint; in this respect it 

 agrees with some of the following species. From L. longirrmis^ with which it agrees in having seventh 

 joint with claw of second and third pairs of legs conspicuously shorter than sixth joint, it differs in 

 the antennulse, in having no ventral abdominal tubercles, shorter and stouter legs, the chela 

 broader, etc. 



Occurrence. It has been taken by the "Ingolf at five stations. 



East of Iceland: St. 58: Lat. 64° 25' N., Long. 12° 09' W., 211 fm., temp. 0.8°; i spec. 

 — - — vStioi: Lat. 66° 23' N., Long. 12° 05' W., 537 fm., temp. -=- 0.7"; 7 spec. 



North of Iceland: St. 126: Lat. 67° 19' N., Long. 15° 52' W., 293 fm., temjx -^ 0.5°; i spec. 

 — - — St. 124: Lat. 67° 40' N., Long. 15° 40' W., 495 fm., temp. -^ 0.6°; i spec. 



Jan Mayen: St. 115: Lat. 70° 50' N., Long. 8°29'W., 86 fm., temp, o.i; ab. 75 spec. 



Besides it has been secured by the II'' Amdrup Exped. at a single locality. 



East Greenland: Cape Dalton, Lat. 69° 24.6' N., 9— 11 fm.; i spec. (The chelae of this specimen 

 has the anterior margin of the movable finger sinuate (fig. 4g)). 



47. Leptognathia brachiata u. sp. 

 (PI. VII, figs. 5a-5h.) 



Female. Antennula; two-thirds as long as the carapace (figs. 5a — 5b). First joint (fig. 5c) 

 robust, somewhat longer than the three other joints combined, a little more than twice as long as 

 thick, moderately tapering; second joint stout, a little produced above, with the upper margin some- 

 what longer than the depth of first joint and a little more than half as long as that joint; third joint 

 with the upper margin a little less than half as long as that of the second; fourth joint proportion- 

 ately short, considerably shorter than the second. — Antennae with fifth joint about half as long again 

 as the fourth, which is a little shorter than the sixth. 



Chelipeds (fig. 5d) moderately robust. Carpus somewhat less than twice as long as deep, with 

 less than the distal half much expanded downwards, the corresponding lower margin being strongly 

 convex and almost subangular. Chela a little shorter than the carpus, a little more than twice as 

 long as broad, without any serration; anterior margin of the hand a little longer than the movable 

 finger, with the lower angle above the insertion of the finger scarcely rounded; movable finger of 

 moderate breadth; fixed finger with three acute saw-teeth on the distal part of the incisive margin. 



