CRUSTACEA MALACOSTRACA. II. 71 



trading lateral process or keel. — Uropods (fig. id) in the main as in L.Sarsii; peduncle about twice 

 as long as deep, a little more than half as long as first joint of the endopod, and this joint is some- 

 what longer than the second ; exopod scarcely more than half as long as the proximal joint of the 

 endopod. 



Length of a female without marsupium from Greenland 3.2 mm ; an ovigerous female from Nor- 

 way is 2.2""" long. 



Remarks. This species is, in my opinion, well separated from L. Sarsii by the absence of a 

 row of teeth on the outer side of the chela and by having the last abdominal segment simple, without 

 any acute or rounded lateral process. 



In the revised list of the Danish species of most orders of Malacostraca (1909) I referred 

 L. graciloides Lilljeborg to L. gracilis Kr. Having re-examined the Danish specimens I prefer now to 

 refer them to L. graciloides which is re-established as a species closely allied to A Sarsii and L. gra- 

 cilis. L. graciloides agrees with L. Sarsii in having a row of tubercles on the outer side of the chela, 

 but the anterior margin of the movable finger has only about five sharp saw-teeth, and the last ab- 

 dominal segment has, as in L. gracilis, no trace of a lateral process; it differs from L. gracilis in pos- 

 sessing the row of tubercles on the outer side of the chela, and the carpus of the chelipeds has the 

 distal half more expanded downwards, so that the lower margin of the carpus is at the middle con- 

 siderably more incised as in L. gracilis and even more than in the figure of L. Sarsii (PL VI, fig. 7a); 

 finally the uropods have the exopod considerably more than half as long as the first joint of the 

 endopod. Length of the Danish specimens, among which a couple of ovigerous females, 2.2 — 2.5 mm . 



As to Kroyer's specimen and description I refer to my remarks (p. 230—31) in the paper on the 

 Danish fauna; it is clear that my application of the Kroyerian name is not quite certain, but I have 

 used it, as I did not like to cancel it. 



Occurrence. This species has been captured by the "Ingolf" at a single locality. 



West-Greenland: Ameragdla (inner end of Ameralik Fjord, near Godthaab), muddy bottom, 



n spec, (some of them young). 



According to Sars his specimens of L. islandicits or (in 1885) L. longiremis, which seem to be- 

 long to L. gracilis, were taken at Iceland, harbour of Reykjavik. 



Distribution. As already mentioned, I found a few specimens of L. gracilis between co-types 

 of L. longiremis given by G. O. Sars and taken at Norway. The Copenhagen Museum possesses 3 

 small specimens from the Kara Sea, 50 fathoms. Kroyer's specimen was from Spitzbergen. Specimens 

 taken in the deep water off Aberdeen and in the Moray Firth were determined by Th. Scott as L. (?) 

 longiremis Lilljeb., but according to his description and figures the specimens probably belong to L. gracilis. 



Group a, subdivision ft (vid. p. 66). 



44. Leptognathia Hanseni Vanhoffen 

 (PL VII, figs. 2 a— 2 1). 



1907. Leptognathia hanseni Vanhoffen, Zool. Jahrb., Abth. fur System. Bd. XXV, p. 513, Taf. 20, Fig. 13 — 15. 

 Female. General aspect about as in L. gracilis. — Antennula? (fig. 2a) on the whole a little 



