586 



DELPHINID^. 



Dimensions. Length of an adult female 6 ft. 11 inches, of rostrum 

 externally 5 in., from snout to dorsal fin 40, to pectoral 21, length 

 of pectoral along anterior curve 15 ; vertical height of dorsal fin 8, 

 length of its base 18 ; expanse of tail-flukes 20 (Owen). 



Distribution. Vizagapatam. 



This is a doubtful species, founded on drawings, no skull having 

 been preserved. As already suggested, it requires comparison 

 with Tursiops catalania. 



Genus DELPHINUS, Linn. (1766). 

 Syn. Eudelphirms, Prodelphinus, Gervais (1880). 



Snout long, separated by a groove from the forehead. Dorsal 

 and pectoral fins falcate. 



Fig. 191. Skull of Delphinusdelphis ; from the side and above. 



Rostrum long and narrow, generally about twice as long as the 

 cranial portion of the skull. Pterygoids narrow, compressed, sharply 

 keeled, in contact. Mandibular symphysis short. Teeth small 

 (TTF to a jnch m major diameter), acutely pointed, and numerous 

 (41 to 65 on each side of each jaw), oval in section towards the 



