PORPOISES. 245 



way, near Heligoland, in 1762, which was 24 ft. long, 9 ft. 

 thick, and had a dorsal fin 6 ft. high. Is principally confined 

 to the North Sea, from whence specimens occasionally wander 

 down as far as the south of the Sound. 



79. D. G-LOBICEPS, Cuv. (Melas, Trail.) Grind Delfin. The 



Eound-headed Porpoise Caing Whale. 

 Head short and round, with the forehead very convex 

 and prominent; teeth conical; usual length 20 ft. 

 pectorals very long and pointed ; colour black, under 

 the throat a white spot which stretches backjike a small 

 streak on the under parts. 



Has never been seen in the Cattegat or Baltic ; only met 

 with in the North Sea, off the coast of Norway. 



80. D. LEUCAS, Pall. Hvit Delfin. The White Beluga. 



No dorsal fin ; colour white, sometimes tinged with 

 rosy yellow ; head blunt and broad ; snout not produced ; 

 teeth y, blunt; length 12 to 14 ft. 

 The Greenland, Spitzbergen, and Iceland seas are the 

 proper home of the beluga, which is rarely seen off any 

 Scandinavian coast. 



Sub-genus. Phoccena. 



Body small ; head blunt, pointed ; no depression in front 

 of nose ; teeth small, blunt, rounded, compressed. 



81. D. PHOCOENA, L. Vanlig Tumlare. The Porpoise. 



p. .IF. 



A small dorsal fin ; head obtuse, not beaked ; teeth 

 30 to 24 on each side, above and below, differing inform 

 from those of any other cetacean ; instead of being conical 

 they are compressed and rounded at the apex ; colour, 

 upper parts blackish, gradually becoming lighter on the 

 sides ; belly pure white ; pectorals brown ; usual length 

 4 to 8 ft. 



The commonest of all the cetacecR on these coasts, from 

 the Baltic right up into the Polar Sea. 



