OTARIA — EUMETOPIAS. 169 



inches; breadth 8f inches. Surface of hard palate 



.33 

 deeply concave, length 9 inches. Dentition : in. - , 



11 6 (3 



c. - - , p.c. — . 



Straits of Magellan, Laredo Bay. 



Donor — Dr R. O. Cunningham. 



3. Skull, adult female, no mandible. Length in straight line 



9 A inches, over vertex 13 J inches ; breadth 6 inches. 



Surface of hard palate concave, length 5| inches. 



T^ ^., . .33 11 66 



Dentition : m. - , c. , p.c. - . 



Maldinado, River Plate. Donor — Dr R. O. Cunningham. 



4. Skull, with mandible, very young. Length 6| inches, 



breadth 3f inches ; length of palate 3 inches ; length 



of mandible 4 inches. Dentition : post-canines ^ ^, 



erupted in lower jaw, about to pierce gum in upper. 

 Stanley, Falkland Islands. Challenger Collection. 



5. Skull, much broken, female. Length 10 inches, over 



vertex 12 inches. Hard palate, length 5h inches ; 



A■l.^ T^ .-.• -33 11 "66 

 no mandible. Dentition : m. - , c. — , p.c. — . 



Chincha Islands. M'Bain Collection. 



6. Vertebra, atlas, and a digit from No. 1. Atlas, trans- 



verse diameter 6| inches. Single digit with three 

 phalanges. 

 West Falkland Islands. Challenger Collection. 



II. EUMETOPIAS. (Eu.) 



Eumetopias, Gill, Proc. Essex Institute, v., LS66. 



This genus was suggested by Gill, and distinguished 

 from Otaria by the hard palate ending well in front 

 of the pterygoid processes, the hinder border being 

 usually scooped or emarginate, and the surface being 



flat or nearly so. The molars are ^ -z. Gill 



regarded the Alaskan Sea Lion described by Steller 

 as the only species of Eumetopias, whilst others 

 associate with this genus the Californian Sea Lion, 

 the Gre}' Sea Lion, and Hooker's Sea Lion. It 

 should be .stated that, if Eumetopias is limited to 



