1908.] INDIAN DOLPHIN AND PORPOISE. 807 



Mammary groove lialf-an-inch in length ; situated on the 

 posterior half on each side of the genital groove, which is placed 

 on a ridge 6 inches long, marked off from the abdominal region 

 and gradually widening towards the anal opening ; ear-hole 

 minute. 



Since the foi-egoing was written I have received from the 

 Director of the Trevandrum Museum a sketch and description of 

 another Dolphin purchased from the local fishermen on the 

 eleventh of August 1908. 



Of this specimen- (PI. XLV.) the following particulars have 

 been sent me : — 



ft. ill. 



Extreme length from tip of snout to notch on the tail- 

 flukes 7 2 



From tip of snout to the basal angle of the prenai-ial 



adipose elevation 8 



From tip of snout to angle of mouth 1 3 



Do. to anterior angle of the eye 1 3| 



„ blow-hole 1 4 



,, flippers 2 



,, origin of dorsal fin 2 10 



,, anterior commissure of genital grove 4 



,, vent 5 6 



Length of front margin of flipper along the curve 1 2 



_ „ „ _ „ dorsal fin „ „ 1 7| 



Height of dorsal fin 8 



Greatest girth of body in front of dorsal fin 4 3 



,, ,, including dorsal fin 5 2 



Smallest circumference at root of tail 1 



Expanse of flukes 2 1 



Eye 1-^ in. longest diameter ; ear vertically ovate, length 3 mm. ; 

 genital groove 8 in. ; vent 2| in. in diameter ; between genital 

 and anal openings 8 in. 



A prenarial adipose elevation marked off from the tapering 

 snout by a U-shaped, ill-defined groove. Body fusiform, much 

 compressed towards the tail, the prominent backward extension 

 of the dorsal fin gradually shelving off into the caudal ridge, which 

 is continued along the corresponding line of the under surface. 

 Flippers feebly falcate. 



The colour is uniform pale plumbeous, washed with pale brown 

 and becoming lighter towards the under side ; the body being 

 profusely flecked with long pear-shaped pale pinkish and dark 

 plumbeous markings of varying sizes. Angle of mouth, margin 

 of upper lip, and top of snout mottled with whitish ; lower lip 

 creamy white mottled with brown ; belly mottled with white, less 

 so on the pectoral region. There are also groups of milk-white 

 pai-allel striations in different parts of the body and on the 

 flippers and flukes. 



Teeth '^ x 07^ = 144 ; modei'ate, conical, the tips curving 



