1908] Decapod Urustaceans. or 
blanee to these small gasteropods but that they are frequently found 
at the same depths in the cold area of the Northern Sea where 
Scleroerangon ferox resides. However according to Mr. FrreLr's 
work ,Mollusca from the Norwegian North-Atlantic Expedition 
1876 —78* (Christiania 1882) the egg-capsules of both the species 
only contain å single young one (whereas this species contains from 
10—12), and again the egg-capsules of N. Damelsseni at any rate 
are considerably larger (6 mm.) than the 3 mm. of this species. 
In the case of N. Mohmi the size of egg-capsules has not been given. 
The term *cupola-shaped egg-capsules” is equally applicable here, 
but the species is probably å smaller one than either of the other two. 
Seeing that these gasteropod capsules were present on several 
of our specimens of Scleroeramgon ferox, and were not merely found 
upon one, it does not seem as if the hatching-place which these 
gasteropods had chosen for their eggs was purely the result of 
chance. 
Sclerocrangon boreas Prirrs. 
Habitat: We have specimens of this species from several 
fiords in northern Norway [Skjærstadfjord, 10—100 meters; Trold- 
fjordsund, 40 meters; Kamstadfjord, 30—90 meters; Breisund, 
100 meters; Bordstadfjord, 50 —80 meters; Kamagfjord; Porsanger- 
fjord, littoral region (a small spetimen 20 mm. long) and 90 meters: 
Tromsø and Vadsø). They have been taken by s/s *Michael Sars” 
at Green Harbour (Spitzbergen) 150 meters, as well as at the 
following stations:— 
Se 10007140 7 NN 199 4 BE; 90 meters. Kr 
24 rer ke ee Off Bear 
ae 9001: 72019 N 16950 E; 280 — Island 
90. 740430 N 17910' E; 200 vg 
» 90, 2% 1902: 64" 17.8! N 14944" W; 60—80 meters. South- 
east coast of Iceland. 
Bathymetric Distribution: Whereas Sc. ferox is unquest- 
ionably åa deep-water form, the allied species Sc. boreas is found 
right up in the littoral region [Skjærstadfjord (NORDGAARD) and 
Porsangerfjord (s/s *Michael Sars” 1900)|. The greatest depth 
from which we have material is 280 meters. 
Breeding Season: Amongst the otherwise rich material 
colleeted during the periods March-April and June— September 
