﻿CRUSTACEA MALACOSTKACA. II. qq 



of the three preceding segments. — Uropods (fig. 6h) a little longer than sixth segment, somewhat 

 robust; peduncle thick, only a little longer than deep; endopod with first joint a little longer than the 

 second and considerabh' longer than the exopod. 



The animals are whitish or light yellowish and less shining than in T..polita. 



Length of females with marsupium 2.7—3 '""•> o^ ^ ver\- large female without marsupium 3.3 "'"'. 



Subadult Male. The antennulte (fig. 6i) are considerably thicker than in the female; first 

 joint only slightly longer than second and third joints combined, about twice as long as deep; second 

 joint only a little le.ss deep than the proximal part of the first joint and conspicuouslv less than half 

 as long again as deep. — Abdomen longer than in the female, slighth- longer than the three preceding- 

 segments combined. Pleopods larger and especialh the exopods conspicuousl}- longer with longer 

 setse than in the females. — Length 2.4 — 3.0 '"™. 



Remarks. L. vicina is allied only to L. polifa : the best distinguishing characters between 

 them are afforded by the joints of the chelipeds and by the much feebler armature of the incisive 

 margins of the fingers of the cheke in A. vicina. 



The mouth-parts have been examined. The mandibles (fig. 6c) are slender and their molar 

 processes are very different from those in the species of Leptognathia figured by Sars. Each molar 

 process has the proximal half somewhat thicker than the distal; the end is rounded with three 

 triangular teeth in front (fig. 6d) and posteriorly with several slender processes forming a comb. 

 The maxillulae (fig. 6e) are very slender, but the major part of the palp is somewhat inflated. 



Occurrence. L. vicina has been taken b\- the "Ingolf at two stations. 



Davis Strait: St. 32: Lat. 66°35' N., Long. 56° 38' W., 318 fm., temp. 3.9°; i spec. 

 — — St. 28: Lat. 65^14' N., Long. 55° 42' W., 420 fm., temp. 3.5°; 40 spec. 



Besides it has been taken by Admiral C. Wandel in 18S9 at the following place. 



Davis Strait: Lat. 66°49' N., Ivong. 56° 28' W., 235 fm., sand and ooze. temp. 4.4°; i spec. 



Group d. Uropods with the pediinclc produced in a triangular protuberance probably answering 

 to an exopod not marked off", endopod tzvo-or one-jointed. Pleopods moderately ivell developed. 



Species 63 — 65. 



This group is a very natural one, as its three species are allied to each other and differ in 

 several features from all species of this genus described in the preceding pages. The chelipeds differ 

 from those of all other species by the curiously shaped ischium and carpus; furthermore the basal 

 joint has the whole oblique posterior margin attached to the cephalothorax. The three posterior pairs 

 of legs are robust with seventh joint short and the claw ver\- short. 



63. Leptognathia profunda n. sp. 

 (PI. X, figs. la— ih). 



p-emale (without marsupium). Body slender, a little more than eight times as long as broad 

 (fig. I a) and with the abdomen almost broader than the thorax or the carapace. Carapace as long as 

 the two following segments combined (fig. la), seen from il)o\e considerably longer than broad, feebly 

 angular before the middle and in front more llian halt' as l)road as near the middle. 



13* 



