520 DELPHINIDjE. 



by this fossil may still exist in our seas, remains to be 

 proved: until then, it may be regarded as an extinct 

 species of Delphinidee, for which I propose the name of 

 Phoceena crassidens. 



Remains of Delphinldee have been found in silt several 

 feet below the surface in the " Seeding levels," and at 

 the mouth of Cuckmeer. The most completely petrified 

 specimen referable to this family of Cetacea, is the anchy- 

 loid mass of cervical vertebrae in Professor Sedgwick's 

 museum in the University of Cambridge. Respecting 

 this specimen, which has belonged to a Cetacean as large 

 as the Grampus or Narwhal, the Professor writes to me : 

 " It was found in the brown clay (alias till) near Ely ; 

 but I have not the shadow of doubt that it was washed 

 out of the Kimmeridge (or Oxford) clay, for both clays 

 are near at hand. In condition, it is exactly like the 

 bones of those clays, and is utterly unlike the true gravel 

 bones, whether in the dry gravel or the till. 11 



Subjoined is the figure of the anchylosed cervical verte- 

 brae of the Phocana crassidens. 



Fig. 214. 



Cervical vertebrae of thick-toothed Grampus. Fens, Lincolnshire. 



