1671.] 



DR. J. ANDERSON ON A NEW CETACEAN. 



143 



skull. Teeth small, round, conical, pointed, rather closely set and 

 occupying the whole length of the jaw to nearly on a line with the 

 notch! Dentition }f to ||. Vertebrae 62 to 63. 



Fig. 1. 



Orcella brevirostris. 



Orcella brevirostris. 



Phoccena (Orca, Gray, Reinhardt) brevirostris, Owen, Trans. 

 Zool. Soc. Loud. vol. vi. p. 24 et seq. pi. ix. figs. 1, 2, 3. 



Globiocephalvs indicus, Blyth (in part), Journ. As. Soc. Beng. 

 xix. p. 426, xxi. p. 358, et xxviii. p. 490; Cat. Mam. As. Soc. 

 Museum, 1863, p. 89. 



Orca (Orcaella) brevirostris, Owen ; Gray, Cat. Seals and Whales 

 British Museum, 1866, p. 285. 



Dorsal fin rather large, rounded, falcate, and situated immediately 

 behind the middle of the body; pectoral fin triangular, rather pointed, 

 moderately broad at the base, posterior margin not emarginate. Upper 

 surface slaty black, paling to grey on the sides and under surface. 



Skull rather full and rounded behind, moderately broad in front ; 

 rostrum tapering, rather narrow at the base ; dentition of adult \%. 



Hab. Bay of Bengal, Madras coast, occasionally frequenting the 

 tidal streams of the Ganges, seventy or eighty miles from the sea. 



Orcella fluminalis. 



Orcella fluminalis, n. sp. 



Dolphin of the Irrawaddy, Anderson, P. Z. S. 1870, p. 220 et 

 p. 544. 



