258 MamMatia oF InptiA. 
No. 260. DELPHINUS PERNIGER. 
The Black Dolphin (Jerdon’s No. 142). 
HasitTat.—Bay of Bengal. 
DeESCRIPTION.—‘*‘ Twenty-six teeth on each side above and below, 
obtuse, slightly curved inwards; of a uniform shining black above, 
beneath blackish.”—/erdon. 
S1zE.—Total length, 5 feet 4 inches. 
This species was taken in the Bay of Bengal and sent to the Asiatic 
Society’s Museum by Sir Walter Elliot, but it does not appear to be 
mentioned by Professor Owen in his notice of the Indian Cetacea 
collected by Sir Walter Elliot. 
No. 261. DELPHINUS PLUMBEUS. 
The Lead-coloured Dolphin ( Jerdon’s No. 143). 
HapitTat.—Malabar coast. 
DescrIPTION.—Thirty-six teeth in each side in the upper jaw and 
thirty-two in the lower jaw; of a uniform leaden colour, with the 
lower jaw white. 
Size.—About 8 feet. 
Whether this be the same as or a different species to the next I am 
unable to say, as the description is meagre, and the number of teeth 
vary so much in the same species that no definite rule can be laid down 
on them. 
The following are the species named by Professor Owen and collected 
by Sir Walter Elliot. 
No. 262. DELPHINUS GADAMU. 
NaTIvVE NaME.—Gadamu. 
Hasitrat.—Madras coast. 
DESCRIPTION.—Body fusiform, gaining its greatest diameter at the 
fore-part of the dorsal fin, decreasing forward to the head by straight 
converging lines, and with a gentle convex curve to the eyes and blow- 
hole; the forehead descends with a bold convex curve; the sides of 
the head converge from the eyes to the base of the snout, which is 
divided from the forehead by a transverse groove extending almost 
horizontally to the angles of the mouth, and it equals in length the 
distance from the base to the eyes, which is five inches and a-half; the 
lower jaw projects a little beyond the upper ; the blow-hole is crescentic, 
in a line with the eyes, exactly in the middle of the head, with the horns 
