TURSIOPS. 323 



Distribution. — Malabar Coast. 



This species is distinguished from Delphinus delphis by the 

 number of its teeth 55:?5: the beak forms 67"q per cent, of the 



67-68 ' ' ^ 



total length of the skull, a proportion never reached in any speci- 

 men of D. delphis (cf. True Bull, U. S. Nat. Mus., no. 36, p. 59). 



[No specimen in the Indian Museum.] 

 Genus TURSIOPS. 



Tursiops, Gernais Hist, Nat. Mamm., ii, p. 323 (1855)*. 



Tursiops tursio. 



Delphinus tursio, Fabricius Faun. Grant., p. 49 (1780)*. 



Delphinus truncatus, Montagu Mem. Wern. Soc, iii, p. 75 , pi. iii (1821). 



Delphinus eurynome, Gray Zool.Ereb, and Terr., p. 38 (,1846); BlythCat, 



no. 277, p. 90. 

 Tursiops tursio, Flower P.Z.'S., p. 512 (1883); \i. List Cetacea B. M., 



p. 26. 



Distribution, — Atlantic and Indian Oceans extending to the 

 Bay of Bengal. 



There is a specimen identified by Prof. Flower with this species 

 in the British Museum from the Seychelle Islands, so there is no 

 reason that the two specimens catalogued below should not be 

 identified with this species, though without direct comparison it ft 

 impossible to be certain. 



a. Skull Medical College, Calcutta, 



A.S.B. 



b. Skull Bay of Bengal Capt. Fairweather, A.S.B. 



c. Skeleton Port Natal O. L, Fraser. 



Tursiops perniger. 



Delphinus perniger, Blytk J. A. S, B., xvii, p. 250 (1848) ; id. y. A. S. B., 

 xxviii, p. 491 ; id. Cat. no. 280, p. 91 ; Jerdon Mamm., p. 157. 



Distribution.— The Bay of Bengal. 



This species can never be properly identified as the type con- 

 sists of a stuffed specimen and only about 8 inches of the beak of 

 the skull ; it is best assigned to Tursiops, from the typical speci- 

 mens of which, however, it differs in the fact that the tooth row 

 above is only about 7^ inches long, whereas in Tursiops tursio 

 the measurement is between 9 and 10 inches ; the teeth are large 

 between 5 and 6mra. in antero-posterior diameter. 



a. Stuffed and Bay of Bengal Sir W. Elliot, A.S.B. 



pt. of skull. 



[Type of Delphinus perniger, Blyth.] 



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