Fig. 79. — The right tympanic of Balcena x>riimge7iia (Van Berieden), from the 

 Red Crag of Suffolk. (4 nat. size.) 



Fig. 80. — Anterior portion ot cranium of ChonezipMus planirottris (Cuvier), Pliocene, 

 Antwerp Crag: \ nat. size. 14', vomer; 14, mesethmoid ; 21, maxilla; 22. pre- 

 masilla ; d, d, canals, which terminate in the prenasal fossae. 



Ceag Cetacea. (See Table-case No. 11.) 



