Plate III. 



Callorhinus ursinus Gray. 

 [The figures are all one third natural size, when not otherwise stated.] 



Fig. 1. Skull of 9 seen in profile (specimen No. 2924). 



" 2. The same seen from above. 



'• 3. The same seen from below. 



" 4. Underside, in part, of the skull of another 9 (spec. No. 2925), 

 showing the teeth and the posterior outline of the palatine bones 

 (natural size). 



" 5. Anterior part of the skull of young 9 (thirty-five days old), show- 

 ing the dentition (natural size). 



" 6. Teeth (one half nat. size) of an old $ (spec. No. 2926) ; 6a, upper 

 incisors seen from the side ; 6b, same teeth seen from the oppo- 

 site side ; 6c, upper molars seen from the outside ; 6a*, same seen 

 from the inside ; 6e, lower molars seen from the inside; 6/, same 

 seen from the outside ; 6a, lower incisors seen from the side. 



" 7. Teeth (one half nat. size) of another old <J (spec. No. 2922) ; 

 7a, incisors seen from the side ; 76, same teeth seen from the 

 opposite side ; 7c and 7c', upper canines ; 7 a*, upper molars 

 seen from the outside ; 7e, same teeth seen from the inside ; If, 

 lower molars, seen from the outside ; 7a, same teeth seen from 

 the outside. 



" 8. Scapula of a male (spec. No. 2923).' 



Eumetopias Stelleri Peters. 



Fig. 9. Inner side of the right ramus of the lower jaw 



" 10. Same seen from above. 



" 11. Same seen from below. 



" 12. Scapula of the middle-aged g. 



" 13. Scapula of the very old g. 



" 14. Os penis, seen from the side. 



" 15. Muzzle of £ (one tenth natural size). 



Phoca vitulina Linn. 

 Fig. 16. Scapula. 



