I2 o CRUSTACEA MALACOSTRACA. II. 



two protuberances on the incisive margin of the fixed finger are well developed, and when the fingers 

 are closed a row of three oblong holes are seen between them. 



Abdomen proportionately as long as in the male, but the sixth segment is longer, being even 

 slightly longer than the sum of fifth, fourth, third and half of the second abdominal segment. 



Length 1.25 mra . 



Occurrence. This species has been taken by the "Ingolf" at two deep stations in the 

 warm area. 



Davis Strait: St. 24: Lat. 63°o6' N.. Long. 56°oo' W., 1199 fin., temp. 2.4 ; 1 female. 



South of Iceland: St. 64: Lat. 62°o6' N., Long. 19 00' W., 1041 fm., temp. 3.1 ; 1 subadult male. 



Distribution. This tiny species is easily separated from S. cylindrata. It is the smallest 

 species hitherto known from the North Atlantic and probably smaller than any species hitherto 

 described. 



Strongylurella n. gen. 



Allied to Strongylura, but differing in the following characters. 



The thoracic segments as to relative length as in Leptognathia, consequently differing from 

 Strougylura in having the three anterior segments combined conspicuously longer than the fifth and 

 sixth segments combined. The last abdominal segment shorter than in Strongylura and longer than 

 in Leptognathia, being slightly longer than broad. The uropods have the endopod divided as in 

 Strongylura, as its proximal joint is much longer than the distal, but the exopod is wanting. 



Remarks. It was found necessary to establish this new genus on a single species which 

 differs materially from Leptognathia. Strongylura and allied genera. 



75. Strongylurella indivisa n. sp. 

 (PI. XII, figs. 2a— 2 e.) 



Female (without marsupium). Body very slender (fig. 2a), about eight and a half times as 

 long as broad, broadest behind the middle of the carapace and thence tapering slightly to the base 

 of the abdomen. — Carapace large (fig. 2 a), even a little longer than the two following segments 

 combined, considerably longer than broad, at the front end scarcely half as broad as behind the middle 

 and with the lateral margins evenly and moderately convex. 



Antennulse (fig. 2 b) somewhat shorter than the carapace, shaped nearly as in Strongylura cy- 

 lindrata. First joint a little shorter than the three other joints combined, two and a half times as 

 long as deep, but only a little deeper before the base than at the distal end. Second joint consider- 

 ably produced above, a little less than half as long as the first and distally thicker than at the base; 

 third joint moderately large and distinctly longer than deep; fourth joint conspicuously longer than 

 the third and shorter than the second. — Antennae moderately short; fourth and fifth joints completely 

 fused, about two and a half times longer than the sixth joint. 



Chelipeds moderately robust (fig. 2b). The basal joint is somewhat shorter than the carpus. 



