730 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XVI. 



visional), we shall have the following external characters of the definable 

 spesies of Tursiops: — 



1. Tursiops tursio. European Seas. 



Size large : 9 ft. G in. 

 Upper surface blackish. 

 Under-parts white and unspotted. 



2. Tursiops cibusalani. Red Sea and Indian Ocean. 



Size smaller : 7 ft. 2§- in. (type), 6 ft. 11 in. (India). 

 Upper surface dark greenish. 



Under-parts whitish and spotted with green in adult ; whitish in 

 young. 



3. Tursiops catatonia. N. Australia to Indian Ocean. 



Syn. T. fcrgusoni. 



Size about the same as last : 7 ft. 8 in. (type), 7 ft. 4* in. (India). 



Upper surface dark slate. 



Under-parts yellowisht, flecked with lead-colour. 



4. Turs ; ops gilli. N. Pacific to Indian Ocean. 



Size, Indian specimen, 6 ft. 8 in. 



Whole surface blackish, tending to lighten slightly on the under- 

 parts, with a tinge of reddish in Indian specimens. 

 Whether or no I am right in any or all these identifications, the colored 

 figures of the Trevandrum specimens cannot fail to be of gi'eat value in future 

 researches on the subject ; and I venture to hope that the authorities of the 

 Trevandrum Museum will continue their excellent practice of sketching and 

 preserving every Dolphin that may come to band. 



*Till farther evidence, I should doubt the occurrence of this species in the Indian Ocean. 



t Tn the type the under-pavts are said to be whitish; if the orange tint of the Trevan- 

 drum specimens is a specific character, then the name T. fergusoni will be available for the 

 Indian form. 



