EXPÉDITION ANTARCTIQUE BELGE 



Remarks.-- The collection in the British Muséum of Natural History is rich in spécimens 

 of this large Seal. Thus the single skull of a young spécimen brought home by the Belgica adds 

 nothing to our knowledge of the species, albeit it is the only example of which the sex has been 

 noted by the collectors. This is an important point, since very considérable différences of size 

 and proportion are to be found amongst the skulls of this species. I at one time supposed that thèse 

 must be attributed to différences of sex, and believed that the larger spécimens with finer canines, 

 enormous development of the lambdoid crests, and, in some cases, conspicious sagittal crests, 



