CKfSTACKA MALAC08TRACA. Ill 6l 



on a single specimen, a scarcely full-grown female; I think that his figure shows the posterior half of 

 the body distinctly broader than it was in his specimen. 



The following list of localities shows that specimens have been gathered at three stations in 

 the warm deep-sea area and at six stations in the cold area. In vain I have attempted to refer the 

 specimens from the two areas to two species; it was impossible to find any character. I was unable 

 to find any difference in length, breadth or shape of the more important parts as thoracic processes, 

 fifth segment, abdomen - between the fine males from Stat 36 (1435 fath.) in the warm area and the 

 male from Stat n6 (371 fath.) in the cold area. The male from Stat 113 is only 4-2 mm. long, con- 

 sequently conspicuously smaller than my three adult specimens, and it differs from these in having 

 the processes of first segment only slightly more than half as long as the breadth of the segment 

 the fifth segment is only seven times as long as the breadth somewhat before its middle, and its ab- 

 domen is conspicuously longer than broad; the male from Stat 119 is 4-5 mm., and not only in length 

 but in the features mentioned intermediate between the specimen from Stat 113 and full-grown males 

 measuring 5 mm. -- The only specimen which shows appreciable and probably individual variation 

 is the full-grown male from the deepest station (1870 fath.), as it (fig. i c) differs from the other large 

 mules in the shape of the thoracic processes, which are of normal length but conspicuously thicker 

 and quite straight 



Occurrence. Taken by the "IngolF at nine stations. 



Davis Strait: Stat 24: Lat 63o6' N., Long. s6oo' W., 1199 fath., temp. 2-4; 2 spec (). 

 Stat 36: Lat 6i5C/ N., Long. 562i' W., 1435 fath., temp. 1-5; 2 spec (<f). 



South of Davis Strait : Stat 38: Lat 59 12' N., Long. 5io5' W., 1870 fath., temp. 1-3 ; i spec (c? ). 



North of the Faeroes: Stat 139: Lat 5336' N., Long. 73o' W., 702 fath., temp..-:- 0-6; 2 spec (). 



East of Iceland: Stat 102: Lat 6623' N., Long. io26' W., 750 fath., temp, -s-o-g ; 5 spec 



North-East of Iceland: Stat 120: Lat 67029' N., Long. u32' W., 885 fath., temp, -f- ix>; i spec (). 



Stat 119: Lat 67 53' N., Long. lo'ig' W., 1010 fatlu, temp, * 1-0; i spec (<?). 



South of Jan Mayen: Stat 113: Lat 693i' N., Long. 7o6' W., 1309 fath., temp. -?- it) ; 5 spec. 



Stat 116: Lat 7OO5' N., Long. 826' W., 371 fath., temp. -5-0-4; i spec(<?). 



Distribution. A single specimen taken west of Norway: Lat 6756' N., Long. 4! i' E., 778 

 fath., temp, -j- 1-4 (G. O. Sars). 



37. Haplomesus angustus n. sp. 

 (PL V, figs. 2 a 2 e). 



Young Male. Extremely slender, between ten and nine and a half times as long as the 

 breadth of the anterior segments. The granulation on the body finer than in //. quadrispinosiu. 



Antennuke (fig. 2 b) much shorter than in the preceding species, when stretched back wards not reach- 

 ing the posterior margin of second segment Second joint scarcely as long as the distal joints combined; 

 third joint only about as long as the fourth, but in this young specimen the flagellum contains only 

 two joints, as the distal joint has not yet been divided into two joints. -- Antennae lost excepting the 

 four proximal joints of the peduncle; third joint about as in //. gnaJrisfinostis, nearly as long as first 

 thoracic segment with head. 



