DELPHINUS PLUMBEUS. 157 



the forehead ; teeth numerous, slightly recurved, vary from 24 to 60 on 

 each side, both above and below ; a medium dorsal fin. 



142, Delphinus perniger. 



ELLIOT apud BLYTH, Cat. 280. 



THE BLACK DOLPHIN. 



Descr. 26 teeth on each side, above and below, obtuse, slightly curved 

 inwards. Of an uniform shining black above ; beneath blackish. 



Total length of one, 5 feet 4 inches ; back to frontal elevation 4 inches ; 

 dorsal fin (somewhat posterior) 10 J inches long, 6 inches high ; spread of 

 tail flukes about 14| inches. This species was taken in the Bay of Bengal 

 and sent to the Museum of the Asiatic Society by Mr. W. Elliot. 



143. Delphinus plumbeus. 

 DUSSUMIER. 



THE PLUMBEOUS DOLPHIN. 



Descr. 36 teeth on each side in the upper jaw, and 32 in the lower 

 jaw. Of an uniform leaden colour, with the lower jaw white. Length 

 of one, 8 feet. 



Has been taken on the Malabar coast. Blyth, in his Catalogue, has 

 indicated, from the skulls, Delphinus eurynome, Gray ; Steno frontatus, 

 Cuvier ; Steno attenuatus, Gray; and Neomeris phoccenoides } Dussumier, 

 all from the Bay of Bengal. I shall refer to these in the Appendix. 



Gen. PLATANISTA. 



Char. Rostrum very long, compressed, slightly enlarged at the 

 extremity ; teeth very numerous, conic and recurved in both jaws, 

 compressed ; paddles triangular, fan-shaped \ dorsal fin rudimentary \ 

 eyes minute. 



Skull with the maxillary bones bent up in front of the spiracles, 

 forming a vault ; the neck long, the cervical vertebrae moveable, 

 Possesses a small csecum. 



This genus is peculiar, as far as known, to India. 



