CARNIVORA. 253 



of the muffle be alike in both ; in our specimen it 

 was small but distinct. 



Another species, slightly described by Mr. Gray 

 from a specimen shown at the meeting of the British 

 Association at Liverpool, came from Demerara ; it 

 forms the passage from true otters to the Enhydra 

 or sea otters, differing from both by the size of the 

 tail, which is long, and has two finny edges, and the 

 feet are anteriorly large and webbed beyond the 

 insertion of the claws, and posteriorly rather small. 



Sub-genus ENHYDRA, Flem. Has 6 incisors above 

 and only 4 below, all very sharp, the molars rather 

 broad and strong ; body very long ; no anal scent 

 bag ; tail shorter than the hind legs when stretched 

 but ; hind feet large ; external toes longest, slightly 

 skirted with a web ; head rather small, round ; ears 

 strait, conical ; eyes large, plane, with a nictitating 

 membrane covering more than the anterior half of 

 the ball ; articulations of the hind quarters resem- 

 bling Phoca ; head of femur without ligamentum 

 teres ; and, consequently, the species are reduced to 

 an almost total aquatic life, never visiting further 

 than the rocks bordering on the sea. From the in- 

 complete descriptions extant, we suspect at least 

 two, if not three species, are confounded together. 



