DELPHINUS ALBIROSTRIS. PHOCENA COMMUNIS. 149 



Delphinus albirostris. 



Bclpkhms albirostris, Gray, Ann. and Mag. Nat. Hist. 1846. 

 Delphinus Ibscnii, Nilsson, Skand. Faun. i. 600. 

 Lagenorhynchus albirosfris, Gray, Cat. Brit. Mus. Cetacea, 1850. 

 Wliite-beaked Bottle-nose. 



Desceiption. — Appears closely to resemble the last species 

 in general form and proportions. The beak is rather 

 longer; teeth, ^l—tl ^ small, curved; jaws moderately 

 elongate ; blow- holes horseshoe -shaped, convex towards 

 the head ; upper parts and sides very rich deep velvet 

 black ; nose a well-defined line above the upper jaw ; the 

 whole under jaw and belly cream- colour, and varied -udth 

 chalky white ; fins and tail black ; external cuticle soft and 

 silky, so dehcate as to be easily rubbed ofi". 



The following are the measurements of a specimen from 

 Yarmouth : — Entire length not given ; mouth, 9 inches 

 6 lines ; nose to eye, 13 inches ; length to pectorals, 20 

 inches ; of pectoral, 15 inches ; to dorsal, 41 inches ; dorsal. 

 Hi inches; height of dorsal, 10 inches; width of tail, 

 22 inches. 



Inhabits the North Sea, and has been taken on the 

 coast of Norfolk. 



Genus PHOC^NA. PORPOISE. 



Both jaws furnished with numerous simple and equal 

 teeth ; head blunt, not beaked ; a dorsal fin. 



» Subgenus Phoc^ista. 



Phocaena communis. 



Delphinus Phoccsna, Desm. Mamm. Sp. 770. 

 Fhoccsna communis, F. Cuvier ; Bell, Brit. Quad. 

 Common Porpoise. 



Desceiption. — Teeth twenty-two to twenty-five on each 

 side in each jaw, straight, compressed, and rounded at their 



