STRUCTITRE OF HOOKER'S SEA-LION. 



of the ear to tlie head are about the same as in 0. hookeri. The ear in the three species 

 0. jmsiUa, 0. hookeri, and 0. (ji/lesjjii appears to me to be also decidedly narrower in 

 proportion to its length than in 0. jiihata. Ur. Buvmeister, in a paper ' upon Arctoce- 

 jihahis hookeri, refers to the length of the ears in that species as contrasted with 

 Otcmajubata. 



Another character to which I wish to direct the attention of the Society is the form 

 of the nose (which is illustrated in the accompanying drawings, figs. 1-7) in the four 

 species ah-eady referred to. In the lateral views the nose of Otaria jnhata is seen to 



Head of OUiiia jubntii. 

 (Oac fourth of the size of nature.) 



be distinctly larger than in the other species, and in the front views the breadtli is 

 considerably greater. In fact the external characters of the nose in these Otariida? seems 

 to divide them into two groups, which are also to be distinguished by the characters of 

 the ear. 



' " Notes on Ai-docphalas Uoolcen, Gray," Ann. & Mag. Nat. Hist. ser. 4, vol. ix. (1S72) p. 89. 



