﻿48 



CRUSTACEA MALACOSTRACA. II. 



North of the Fjeroes: St. 139: Lat. 63°36' N., Long. 7°3o'W., 702 fm., temp. -4- 0.6" ; 10 spec. 

 East of Iceland: St. 102: Lat. 66° 23' N., Long-. 15° 52' W., 750 fm., temp, h- 0.9°; 6 spec. 



29. Typhlotanais variabilis n. sp. 

 (PI. IV, figs. 7a— 7d; PI. V, fig.s. 2a— 2 c.) 



Female. Moderatel}- .slender (fig. 7a), abont si.K times as long as broad. — Carapace somewhat or 

 considerably shorter than the two following segments combined, somewhat longer than broad, with 

 the lateral margins convex posteriori}' and their anterior two-thirds converging to the anterior angles; 

 the anterior end slightly more than half as broad as the carapace .somewhat before its posterior mar- 

 gin; the rostral process well developed, acnte. 



Antennnlae scarcely as long as the carapace and half of the next segment combined, rather 

 slender (fig. 2ai. First joint from a little more than four to five times as long as deep and, seen from 

 the side or from above, tapering regularly from near the base to the end, considerably longer than 

 the two other joints combined; second joint twice (fig. 2b) or conspicuously more than twice (fig. 2a) 

 as long as deep and more than half as long as third joint; longest terminal seta slightly or somewhat 

 longer than the two distal joints combined. — Antennic of n(jrmal size; third joint scarcely thickened; 

 fourth joint slightly or distinctly more than twice as long as the penultimate; terminal setae conspic- 

 uously shorter than those of the anteimuhe. 



Chelipeds (fig. 2 a) somewhat long, moderately slender. Basal joint with the posterior pro- 

 tuberance of moderate length; the distance between its hind margin and the front lower end of se- 

 cond thoracic segment about half as long as the joint. Carpus half as long again as the basal joint, 

 three times or a little more than three times as long as deep, with the lower margin nearly straight. 

 Chela somewhat longer than the carpus, not fully four times as long as broad; movable finger a little 

 longer than the anterior margin of the hand; fixed finger much broader than the movable, with a 

 feeble tooth near the end of the incisive margui. 



Thoracic segments (fig. 7 a) increase feebly in breadth from second to seventh. Second seg- 

 ment with the lateral margins feebly converging from the front to the posterior end. Third and fourth 

 segments broadest somewhat before the middle, but the lateral angles at the broadest place of the 

 segments are somewhat rounded and from thence the margins converge moderately to the hind mar- 

 gin. Fifth and sixth segments broadest somewhat from the posterior margin and their lateral margins 

 are somewhat convex; seventh segment with the anterior half of the lateral margins convex, the po- 

 sterior half straight. Second segment without any ventral process in the single female with marsupinm 

 and ill a female of the same size with the ventral side of the anterior segments flat; in all other 

 specimens the ventral side of the anterior segments is convex as in the subadult male (fig. 2c) and 

 second segment has a conspicuous, acute ventral process projecting downwards and much forwards 

 from the anterior part of the segment. — Thoracic legs of moderate length and rather slender. Se- 

 cond pair (fig. 2 at with the distal setje on fourth and fifth joints somewhat short or moderately long; 

 sixth joint as long as the fifth plus half of the fourth, with the distal setae somewhat short; seventh 

 joint with claw .somewhat shorter than sixth joint. Third pair somewhat or rather coiLsiderably shorter 



