﻿CRrSTACKA MAI.ACOSTRACA. II. 



87 



thoracic st'oinent. From /.. snlu,(juiilis it diflVrs in llic siia])t- of tlif l)od\', wliicli in the latter species 

 is extremely slender with the lateral niari^ins nearly parallel; fnrtherniore the exopod of the uropods 

 is proportionately conspicnonsK- longer in /,. sii/>ti<//iii//s than in /.. iiidiud. A. ii/nnra is rather remote 

 from the other forms of .i,n'oup c. 



Occurrence. The "Ingolf" has taken this specie.s at two locahties. 



Davis Strait: vSt. 25: Lat. 63'"3o' ^'- I'"".'^'- ,S4°25' W., 5S2 fni., temp. 3.3"; 23 .spec. 



South of East-Iceland: St. 90: Lat. f>3''43' N., Lon^n. 14 34' W., 90 fm.. temp. 7.0'' ; i spec. 



Distribution. Sars had this species from two widel\- seijarated places on the Norwegian 

 coast, at depths of 100 — 150 fathoni.s. It lias scarcel\' been mentioned b\ an\- other author. 



55. Leptognathia subaequalis n. sp. 



(PI. \'III, fig.s. 6a-6f.) 



Female. Bodv extremely slender (fig. 6a), nine or ten times as long as broad, seen from above 

 nearh' cylindrical, with fourth and fifth thoracic segments slightly broader than the carapace or tlie 

 abdomen; the lateral margins of each thoracic segment nearly parallel, not angular but a little or con- 

 spicuousl\- rounded at both ends of each segment. — Carapace, seen from above, about half as long 

 again as broad, twice or more than twice as long as second thoracic segment but somewhat shorter 

 than the two anterior segments coiubined ; the front end of the carapace conspicuously more than half 

 as broad as the carapace somewhat behind the middle; rostral process somewhat narrow. 



Antennuhe almost as long as the carapace (fig. 6b), somewhat rt>busl. First joint nearlv as 

 long as the three other joints combined, a little or somewliat more than twice as long as deep and 

 with the proximal third considerabU' thickened downwards; second joint much produced abo\-e, witli 

 the upper margin distincth- more than half as long as first joint and twice as long as the depth of 

 the joint itself; third joint with the upper margin ver^■ short; fourth joint conspicuously shorter than 

 the second, much slu)rter than some of the terminal setfe. — Antennae with fourth and fifth joints 

 completely fused, without any vestige of an articulation. 



Chelipeds (fig. 6b and 6c) moderately strong. Basal joint long, nearl\- as long as the car])ns, 

 with the rounded posterior process reaching near to the front lower angle of second thoracic segment. 

 Carpus distincth' less than twice as long as deep, with its lower margin moderately arcuate. Chela 

 slightU' or a little longer than the carpus, somewhat more than twice as long as broad; anterior 

 distal corner of the hand not ])r(.)tvuding, obtuse; mo\able finger considerably shorter than the anterior 

 margin of the hand and much narrower than the fixed finger, which has distinct, sluirji teeth on the 

 distal half of the inner margin. 



Second (fig. 6b) and third pairs of thoracic legs moderately strong; posterior sjiine on fourth 

 joint and both distal spines on fifth joint long; fifth joint only as long as the fonrtli; .sixth joint more 

 than half as long again as fiftli joint, but a little shorter than seventh joint with claw. — Three 

 posterior pairs of legs somewhat slender; sixth joint at least somewhat shorter than .seventh joint 

 with claw, and the claw as long as or shorter than se\'enth joint. 



Alxlomen c\ lindrical, as long as the sum of the two ]>osterior thoracic segments. The lower 



