Ad. s. Jensen: The Selachians of Greenland. 



23 



in front or behind. The quite small spines are mostly close to the snout, between the 

 eyes, inside the shoulder spines, on the anterior, lateral margins of the pectorals and 

 on each side of the upper surface of the tail. The adult males (560 and 650 mm) have 

 on each pectoral the well-known "card" of 18 needle-shaped spines, concealed in great 

 part under the skin and with the point directed inwards; they are partly situated in 

 two alternate rows. 



The colour on the under surface of all the West Greenland specimens is mainly dark, 

 the light being restricted to symmetrically placed spots. Frequently the snout and 

 mouth are white, as also a spot on the breast, a longitudinal streak medially on each 

 pectoral fm and spots or stripes on the ventral fms; but these white parts may partially 

 be wanting or restricted in extent. 



For the sake of completeness I add the principal measurements in mm of some of 

 the West Greenland specimens. 



It should be mentioned, further, that Raja hyperborea has already some time since 

 fallen into the hånds of a naturalist from West Greenland, but has not been recognized. 

 At the place cited Vanhoffen reports, that during his stay in North Greenland in 1891 

 — 93 he obtained 4 rays, namely 2 from Jakobshavn and 2 from Umanakfjord (Ikerasak 

 and Igdlorsuit); they v^ere caught by the Greenlanders on hand-lines, with which they 

 fish for sharks and the Greenland halibut, thus in very deep water. All four were females, 

 of considerable size, namely 575, 640, 795 and 860 mm. Vanhoffen determined them 

 as Raja radiata Donovan and states expressly, that there could be no talk of referring 

 them to Raja hyperborea Collett. 



It appears however from the information given by Vanhoffen regarding these 



') The appendices genitales in this specimen are 190 mm long measured from the posterior 

 margin of the cloaca. 



