43 



skull of Phoca-bicolor ; but it differs from it in all the grinders being 

 placed more longitudinally, and in the lower jaw being slender, and 

 without any angle on the hinder part of the lower edge." 



" Colour fulvous, with the front of the back and a line down the back 

 blackish-grey ; whiskers brown, tapering. Female and young blackish- 

 grey above ; sides with a series of longitudinal yellowish spots." 



It will be seen that the external appearance of this seal resembles in 

 part one or the other of the specimens I have just previously described, 

 but the skulls in the Museum here all possess the lower jaw strong, 

 with, an acute angle behind, and the orbits moderate. The animal, which 

 presents the marked characteristic of a weak and slender mandible, 

 without any angle behind, implying a change in habit and in the nature 

 of the food, must necessarily indicate a distinct species. 



Inhabits South Orkney, Antarctic Ocean. 



STEKOEHTNCHUS CABcrsropHAGA, 1 Homb. and Jacq. Crab-eating Seal. 



Synonyms Lobodon carcinophaga, Gray, B.M.C., 1866, p. 10. 

 Stenorhynchus serridens, Owen. 

 Halichoerus antarcticus, Peale. 



This is a well defined species, distinguished from others of the genus 

 by many properties, but principally by the altered form of the dentition : 

 the first, second, and third molars of each ramus of the upper jaw, and 

 the first one on each side of the lower jaw, are single-rooted all the 

 rest have two roots. The molars are compressed, and with swollen 

 roots, the middle one with a large lobe in front and three lobes behind. 



The symphysis of the mandible is said to be very long. Inhabits the 

 Antartic Ocean. 



" The head, back, hind feet, and upper part of the tail, pale olive ; 

 fore feet, side of the face, body, and tail beneath, yellowish-white ; the 

 hinder part of the sides of the body, and the base of the hind fins, 

 yellow spotted, spots unequal often confluent." 



STEKORHYNCHTTS ROSSII, Gray. Boss's large-eyed Seal. 

 Synonym Ommatophoca Eossii, Gray, B.M.C., 1866, p. 14. 



Another distinct kind. 



Teeth throughout unusually small : " molars compressed, with a sub- 

 central, rather large, broad, slightly incurved lobe, having a very small 

 lobe on the inner side of its front, and a larger conical one in the 

 middle of its hinder edge. Head short, broad ; ears small, with no 

 external conch ; muzzle very short, rounded ; skull depressed, expanded 

 behind ; orbits very large ; nose very short, broad, truncated in front, 

 high behind." 



" In colour greenish-yellow, with close oblique yellow stripes on the 

 side, and pale beneath." Gray. 



, a crab, and Qayw, I eat. 



