32 



CRUSTACEA MALACOSTRACA. IV. 



Occurrence. Not taken by the "Ingolf", but by the Ilnd Amdrup-Expedition, Aug. 21, 1900. 



East Greenland: Hurry Inlet, Lat. /0°5o' N., 10 fath., 1 juvenile specimen with the last pair of legs 



not yet visible. 



The type was taken off West Greenland at Disko in Nordfjord, Lat. 6g°S7' N., 25 fath., clay; it 

 belonged to the Riksmuseum, Stockholm. 



Distribution. Caiman records three localities for this species, viz. the coast of Labrador; Lat. 

 46°48 1 / 2 ' N., Long. 52°34' W., 89 fath., and Lat. 4529' N., Long. 55°24' W., 67 fath. In 1909 Sars recorded 

 a specimen taken by the Ilnd "Pram "-Expedition at Ellesmere Land (ab. Lat. 79°3o' N., Long. 106° W.), 

 "outside the Forvisnings Valley, 2 — 20 fath.". 



CumellopsiS Caiman. 

 Only a single species, the type for the genus, has been found within our area. 



28 Cumellopsis Helgae Calm. 

 (PI. II, figs. 6 a— 6 d.) 



11905. Cumellopsis Helgae Caiman, Fisheries, Ireland, Sci. Invest. I. (1905), p.-2S, PI. II, figs. 20 — 34. 

 1906. Caiman, Mitth. Zool. Stat. Neapel, 17. B., p. 418 — 419. 



1913. helgae Stebbing, Das Tierreich, 39. Lief. p. 178. 



A fine material of adult females is to hand. The carapace has on the whole more depressions and 

 ridges than mentioned or figured by Caiman, but as this adornment shows a little individual variation and 

 the integument is rather thin and flexible, easily damaged, the value of smaller depressions and shorter keels 

 is probably of rather little systematic importance. Some points may yet be mentioned. The long lateral de- 

 pression is generally rather deep, but somewhat before the posterior end of the carapace it either nearly 

 c cases or is interrupted by a short, transverse ridge, which cuts off its long anterior deep part from the much 

 shorter posterior, more shallow portion. The ridge limiting that long depression below is sometimes rounded, 

 sometimes sharp. Seen from above, the "slight median keel posteriorly" is distinct, but an area midway 

 between the pseudorostrum and the first free segment has three longitudinal rounded ridges posteriorly 

 close together, and the lateral pair, which are more distinct than the feeble median ridge, radiate forwards 

 and somewhat outwards; the depressions between these rounded ridges are more or less pronounced, and 

 the interval between each of the outer ridges, which ceases somewhat behind the base of pseudorostrum, 

 and the longitudinal ridge limiting above the long above-mentioned lateral depression is somewhat excavated, 

 forming an oblong, oblique depression. -- In the immature males the dorsal ridges and depressions are less 

 developed than in adult females, though still discernible. Adult males are unknown; in the 6 males to hand 

 the terminal setae on the exopods of third and fourth pairs of legs are extremely short, consequently seemingly 

 undeveloped, and the antennae could not be made out without dissection, which was not undertaken. 



Pigs. 6 a — 6 c represent left third maxilliped, first leg and second leg of an adult female. By comparison 

 with Caiman's figures of the same appendages of an immature male it is seen that they are more slender 



