Il8 CRUSTACEA MALACOSTRACA. II. 



of the thorax and abdominal segments, the length and thickness of the chelae and the thoracic legs 

 with Sars' figures. It may be mentioned that the chelse in this "Ingolf" specimen (fig. i e), in Sars' 

 figure and in my Norwegian specimens are conspicuously more slender than in the above-described 

 specimens from Stat. 113, the chela being somewhat more than twice as long as broad. But in this 

 "Ingolf specimen from Stat. 24 the antennulse are intermediate between those from Stat. 113 and my 

 Norwegian specimens (fig. 1 g), especially their fourth joint is slightly shorter and distinctly thicker 

 than in the last-named specimens. — The young male from the "Ingolf Stat 20 has the pleopods 

 rudimentary; the sixth abdominal segment is as long as the five other abdominal segments combined, 

 but as to the length and thickness of the thoracic legs, the length of abdomen in proportion to the 

 thorax and the shape of the chelae the specimen agrees with Sars' figures, while the antennulae, and 

 especially their short and thick fourth joint, are similar to those in the specimens from Stat. 113. 



From this somewhat detailed investigation it may be seen that it is impossible to divide my 

 somewhat scanty material from both the cold and the warm areas and from Norway into two or three 

 species and besides to take the Norwegian specimens figured and described by Sars into account, 

 because the characters are mingled apparently without reference to depth or temperature. Therefore 

 I feel myself compelled to refer all specimens to the same species which shows considerable but gradual 

 variation in several features. 



Length of the largest specimen, the female from Stat. 113, 3.7 mm , of my largest specimen from 

 Norway 3.0 mm . 



Occurrence. It has been taken by the "Ingolf at three stations. 



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



1 subadult male. 



South-East of Cape Farewell: St. 20: Lat. 58 20' N., Long. 40° 48' W., 1695 fm., temp. 1.5 ; 



1 young male. 



South of Jan Mayen: St. 113: Lat. 69°3i' N., Long. 7°o6'W., 1309 fm., temp. -4- 1.0°; 



1 female and 1 subadult male. 



Distribution. S.cylindrata was hitherto known only from several places at the southern 

 and western coasts of Norway, "in depths ranging from 50 to 200 fathoms. It extends northwards 

 to Selsovig, situated just within the polar circle." 



74. Strongylura minima n. sp. 



(PL XI, figs. 5a— 5 d.) 



Subadult Male. This tiny species is, seen from above (fig. 5a), moderately slender, about 

 seven and a half times as long as broad, subcylindrical, yet tapering slightly towards both ends. — 

 Carapace not quite as long as the three following segments combined, narrower than the next seg- 

 ment, much longer than broad, anteriorly conspicuously more than half as broad as behind the middle. 



Antennulae moderately robust (fig. 5 b), slightly longer than the carapace. First joint two and 

 a half times as long as deep, somewhat shorter than the three other joints combined; second joint 

 somewhat produced above and half as long as the first; third joint middle-sized, distinctly longer than 



