PORPOISES AND DOLPHINS 



337 



one-sixth of the total body length. The dorsal fin is long, but 

 little elevated, and the posterior border is only feebly indented. 

 The colour, as expressed in the trivial name, is a uniform lead 

 grey except the tip and under surface of the lower jaw, which 

 is white. Teeth number 34 to y] in each row, and the length 

 of the animal is about 8 feet. 



Sotalia bomeensis in life is a beautiful glossy white colour 

 dappled with grey. The dorsal fin is low and not concave 

 behind ; its base is continued as a low ridge along the back. 

 The range of this species extends from the Gulf of Siam to the 

 coast of Sarawak in Borneo. Teeth number yj to 39. 

 • Sotalia sinensis, the Chinese White Dolphin, is milky white 

 with pinkish fins and black eyes. It frequents the Chinese 

 coast in small schools at certain times of the year. Teeth 

 number 32 in each row. 



From the foregoing descriptions of species of Prodelphinus 

 and Sotalia no more is expected than that some of the more 

 outstanding forms may be recognized by combining information 

 concerning shape, size and colour with locality of occurrence. 



"ujryd.icA JucAltrtg young 



