236 A BOOK OF- WHALES 



giving it a name. The animal, a young female, was 

 sixteen feet long all but an inch ; purple-black on the 

 back, brown on the sides of the head, and white 

 beneath to as far back as the genital orifice, whence it 

 was brown. The throat is grooved by three grooves 

 on each side. The middle of the caudal fin is convex 

 as in Hyperoodon and Mesoplodon. (See Fig. 31.) 

 It will be noted that the colour and o-rooves on the 



O 



throat differ from those of Z. novae zelandiae ; but 

 there are no salient differences in the osteology. 



