DELPHIXUS PLUMBEUS. 157 



the foreliead ; teeth numerous, slightly recurved, vary from 2-i to GO on 

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



142. Delphiuus pemiger. 

 Elliot apud Blyth, Cat. 2S0. 



The Black Dolphix. 



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 i inches ; back to frontal elevation 4 inches ; 

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

 tail flukes about 1 4^ inches. This species was taken in the Bay of Bengal 

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



143. DelpMnas plmnbeus. 

 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 eiirynome. Gray ; St^iio frontatus, 

 Cuvier ; Steno attenvatus, Gray; an.^ Neomeris phoccvnoides,T)ns&\\va\ei\ 

 all from the Bay of Bengal. I shall i-efer to these in the Appendix. 



Gen. Pl.a.ta>^ista. 



Cliar. — Eosti-um very long, compressed, slightly enlarged at the 

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

 compressed ; paddles triangular, fan-shaped ; doi-sal fin iiidimentary ; 

 eyes minute. 



Skull with the maxQlai-y bones bent up in fi-ont of the spiracles, 

 forming a vault ; the neck loug, the cervical vei'tebi^te moveable, 

 Possesses a small cjecum. 



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



