﻿CRl'STACEA MALACOSTRACA. II. gl 



The process from I'iftli \eutral tubercle is still broader at the base and longer than in A. luistata and 

 besides not horizontal bnt directed backwards and somewhat downwards. Pleopods and uropods abont 

 as in A. hastatn. 



Length of the female without niarsupium 3.S""", of the subadult male 3.3""". 



Remarks. L. adnata is so closely allied to A. I/ns/afn that I hesitated before establishing it 

 as a separate species. But it seems to he a good deal larger than A. hnstaUi and differs bv having 

 the carpus of the chelipeds less robust and conspicuously less expanded downwards, furthermore bv 

 the much more de\'eloped \'entral al)dominal tubercles and a different direction of the process from 

 fifth segment. And judging from the species belonging to the sid)di\ions u and ^i of the same group 

 a the shajje of the carpus and the development of abdominal tubercles afford \ah'ud)le specific cha- 

 racters. FinalU' A. uniiatu was taken in \-ery deep water with the tem])eratures above zero, while A. 

 htistatii was captured in C(.)nsiderable depths in the cold area. — The differences between both species 

 and the next form, A. Aiiidnipii, are pointed out below. 



Occurrence, f.. Iiiistafu has been taken by the 'Tngolf at two stations. 



Davis Strait: vSt. 36: Lat. 6i°5o' N., Long, s^^i' W., 1435 fm., temp. 1.5"; i spec.(?). 



South-West of Cape Farewell: vSt. 22: Lat. 58"io' N., Long. 48 25' W., 1S45 fm., temp. 1.4"; i spec. 



(subad. male). 



51. Leptognathia Anidrupii n. sp. 

 (PI. Vin, figs. 2a— 2 c.) 



Female. vSo closeh' allied to A. //iixfn/tr and A. uniKifa that it ma\- be sufficient to mention 

 some features. — Tlie antennuUe (fig. 2a) are distincth- more slender than in those species, and the 

 first joint is slighth' more than two and a half times as long as deep, but the relati\'e length of their 

 joints shows no essential difference. — The chelipeds (fig. 2b) are a little less robust; the carpus is 

 about twice as long as the depth of its distal half which, in strong contradistinction to the otlier 

 species, is distinctl\' less deep than the proximal half and with the lower margin nearly straight; 

 chela a little longer than the carpus and more slender than in the two species mentioned, being consider- 

 ably more than twice as long as broad; the movable finger almost longer than the front margin of 

 the hand and as broad as the fixed finger. — Second pair of legs (fig. 2c) without spinulcs on the 

 posterior margin of sixth joint. 



Four anterior abdominal segments with the \-entral tubercles rather low; the process from 

 fifth segment about as long as in A. Iiaslafa but less horizontal, though scarcely directed as much 

 downwards as in A. uni/dfu. Pleopods and uropods in the main as in A. Iiastafa; exopod of right 

 uropod two-jointed and distincth more than half as long as first joint of the endo])od, while the 

 exopod of left uroi^od is much shorter and one-jointed, as second joint has not been de\-eloped. 



Length of the female with niarsupium 2.7""". 



Remarks. I!y the shape of the carpus nf the chelipeds /,. . / w^Avc/// is easily distingui.shed 

 from the two ])receding species. It differs on the whole a little more from A. Iiastatn than Irom A. 

 (iniKild, but while the last-named species is oiiK known from stations with ]nxsitive tomperalnri's at 



■Iht Ill»nl|.|■:^l.^■,lin,,n. III. !. ■ ' 



