THE DELPHINOIDEA. 



341 



superior angle of wliicli the spiracle is placed. The teeth 

 become fully developed only in the lower jaw. The cranial 

 basin is immense, and is filled by a loose connective tissue, in 

 which the peculiar fat known as sperrtxaceti is contained. Am- 

 bergris is a sort of bezoar, found in the alimentary canal of the 

 Cachalot, and seemingly derived from the fatty matter con- 



Fvtx'i 



ri6. 106.— Upper (A"), nnder (P.), and lateral (C) views of the skull of a fcetal CacTjalot 

 (PJajsetef). — The nasal bones arc not represented in the upper \'iew, and the hinder ead 

 of the jugal is displaced from its natural connection with the squamosal in (C), 



