HOODED SEAL, 



CARNIVORA. 

 PINNIPEDIA 



257 



PHOCID.V. 



GENUS CYSTOPHORA (Nilsson, 1820). 



Generic -Character. Male with a large hood on nose, inflatile at will; 

 muzzle hairy. Skull with ossified portion of mesethmoid produced in front 

 of nasals. Teeth, inc. 5, molars :f , with large roots and compressed plaited 



HOODED SEAL. 



Cystophora cristata (Erxleben). 



Specific Character. Dark grey above, spotted with an even darker shade 

 lighter beneath. Length of adult from seven to ten feet. 



Phoca cristata, 



leonina, 



mitrata, 

 Cystophora cristata, 

 Stemmatopus cristatus, 



ERXLEBEN, Syst. Reg. An., 590 (1777). 



FABRICIUS, Fauna Grrcenl. (nee. Linn.) 1790. 



CUVIER, Ossem. Foss. V. 210. 



NILSSON, Skand. Fauna (1820). 



F. CUVIER, Diet. Sc. Nat., XXXIX. (1826). 



Neitersoak of Greenlanders, Klapmyds of Danes, Bladder-nose of Sealers. 



THIS genus differs strikingly from the rest of the 

 family, both in its external and osteological characters. 



The nasal aperture of the skull is much expanded, and 



L L 



