8 AD. S. JENSEN. [SEC. ARCT. EXP. FRAM 



Thus we see that in the Greenland form, the longest ray in the first 

 dorsal fin goes from 5 to 7.6 times into the total length (to the base of 

 the caudal fin), and in the European form from 6.2 to 7.3 times; conse- 

 quently no variety, and still less a species, can be based upon this pro- 

 portion. Nor does the height of the second dorsal fin constitute a 

 character for separation, although it seems on an average to be a little 

 lower in the European than in the Greenland form, the longest ray in 

 the second dorsal fin in the latter being of a length that is contained 

 from 4.9 to 5.8 times in the total length (to the base of the caudal fin), 

 while in the European form it is from 5.1 to 6.4 times. 



Taking everything into consideration, I think the idea of separating 

 the arctic sea-scorpion from that of the temperate regions as a definite 

 subspecies, must be abandoned. 



Icelus bicornis REINHARDT. 

 Syn. Icelus hamatus KROYER. 



July 22. 1900. The winter harbour, Havnefjord, about 20 fathoms. 



1 specimen, cT, 61.5 mm. 



20, 1900. West side of the entrance to Stordalen, Havnefjord, 

 about 10 fath. 1 specimen, cf, 77 mm. 

 Fin rays: D 1 . 9, D 2 . 20, A. 16, P. 18. 



31, 1900. Round Vestre Sund, Havnefjord, 10-30 fath. 1 speci- 

 men, cf, 64 mm. 



Fin rays: D 1 . 9, D 2 . 20. A. 16, P. 18. 



Aug. 3, 1900. Fosiieims Peak and the valley on the west side of 

 Havnefjord, from 2 to 20 fath. Small stones. 1 speci- 

 men, cf, 58 mm. 



Sept. 19, 1900. Off Forvisningsdalen, Gaasefjord, 220 fath. Clay with 

 small stones. 2 specimens: 



a. 9 91 mm. D 1 . 9, D 2 . 21, A. 16, P. 18, 



b. cf 63 9, 20, 16, 18. 



20, 1900. The interior of Gaasefjord, 320 fath. 2 specimens: 



a. 9 83 mm. D 1 . 9, D a . 21, A. 14, P. 18, 



b. cf 57 



July 12, 1901. Bay at LanHsend. 1 specimen, 44 mm. 



Aug. 16, 1901. The head of the Gaasefjord. About 7 fath. 3 specimens: 



a. rf 75.5 mm. D 1 . 9, D*. 19, A. 16, P. 18. 



b. 9 73 



c. cf 48.5 



