166 NATURAL HISTORY [Fishes. 



the farthest sharp and thick ; between each is a space adapt- 

 ed to receive the teeth of the opposite jaw, when the mouth 

 is closed. 



The spout-hole is in the top of the neck. In respect to the 

 number and site of the fins, it agrees with the dolphin, which 

 has a high triangular back-fin, placed rather nearer the tail 

 than the head, and the pectoral fins low. 



The colour of the back is black, but on each shoulder is a 

 large white spot ; the sides marbled with black and white ; 

 the belly of a snowy whiteness. Sir Robert describes others 

 that were black, except the belly, and a spot on each shoul- 

 der ; so that it is probable the colour alters in different sub- 

 jects, or in age, sex, or other accident. 



