DELPHINUS ALBIROSTRIS. PHOCjENA COMMUNIS. 149 



Delphinus albirostris. 



Delphinus albirostris, Quay, Ann. and Mag. Nat. Hist. 1846. 

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

 Lagenorhynchus albirostris, G-ray, Cat. Brit. Mus. Cetacea, 1850. 

 White-beaked Bottle-nose. 



Description. — Appeaxs closely to resemble the last species 

 in general form and proportions. The beak is rather 

 longer; teeth, f-§Erf~§> sma ll> 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 with 

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

 silky, so delicate as to be easily rubbed off. 



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, 

 111 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 PH0OENA. POEPOISE. 

 Both jaws furnished with numerous simple and equal 

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



Subgenus Phocena. 

 Phocaena communis. 



Delphinus Fhocmna, Dbsm. Mamm. Sp. 770. 



Pkoc/ena communis, F. Cuviee ; Bell, Brit. Quad. 



Common Porpoise. 



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



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



