ON TWO DOLPHINS FROM MADRAS. 409 



covered with longitudinally elongated blotches of dark lead-colour. 

 Teeth, sf . Skull like that of T. tursio> but smaller ; the rostrum, longer 

 (about three-fifths the total length) and narrower." 



The total length of the larger individual was 6 feet 9 inches, and that 

 of the skull 17 inches. 



Of the Trevandrum specimen, which was stranded on March 7th, the 



taxidermist at the museum has supplied the following details : — 



Ft. inches. 



Extreme length 



From tip of beak to origin of back-fin 



» » » » flipper 



„ „ „ anal aperture 



Length of front margin of flipper 



» back-fin 



Expanse of flukes ... ... 



Greatest girth ... 

 Height of back-fin 



"Lower jaw somewhat larger than upper. A prenarial fatty convex 

 elevation marked off from the moderately tapering beak by a V-shaped 

 groove. 



" Body rounded anteriorly ; tail much compressed laterally ; a pro- 

 minent ridge from the back-fin to the middle of the flukes ; the ridge 

 on the middle portion less conspicuous. 



" Colour above deep glistening plumbeous black, becoming paler 

 below, washed with irregular black markings. Genital and anal regions 

 mottled with dark brown. Lower jaw and sides of lower lip light 

 plumbeous, passing into pale yellowish in front. 



" Teeth, |f. 



" Pterygoids divergent posteriorly. 



" Ribs, 12, the first four double-headed* 



" Vertebra, C. 7 ; D. 12 ; L. 15 ; Ca. 24 = 58. 



" The animal appears to have sustained serious injuries in different 

 parts of the body. The tips of the dorsal and left caudal fins had been 

 bitten off and had subsequently healed. Some of the caudal series of 

 vertebrae had been fractured, and presented a distortion due to subse- 

 quent fusion." 



The length of the skull (which, from the worn condiiion of the teeth 

 evidently belonged to an old animal) is 18| inches. As regards general 

 external form, the characters of the skull (save in one particular), the size, 

 and number of the teeth, and the number of the vertebrae, the specimen 



