584 



DK. EINAR LoNNBERG ON THE 



[Mar. 15, 



Georgia. The length of the palatine surface of the premaxillaries 

 varies without correspondence to age or size from 19*7 to 25"7 per 

 cent, of the basal length of the skull (conf . table of measurements). 



Text-fig. 55. 



OM^Os 



l ^o /u y u kj 



Mot 



vyu^ty 



Outline of palatal aspect of premaxillaries of four specimens of the 

 Sea-Elephant from South Georgia. 



Having thus examined and tried on the Sea-Elephant skulls 

 from South Georgia all the characteristics which Lydekker 

 regarded as satisfactory and distinctive, I have come to the con- 

 clusion that all of them are extremely variable, and, with the 

 exception of two characteristics of " crosetensis" to which I shall 

 return presently, and the width of the occipital condyles, which 

 also will be spoken about later on, all the characteristics of 

 Lydekker 's presumed subspecies are to be found within the limits 

 of the variation of the South Georgia Sea-Elephant. But this 



