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GENUS EN1I YURA.— Fleming. 
DENTAL FORMULA. 
Incisive j ; Canine ; Molar — 38. 
Head, small and globular ; ears, short and conical, placed far back in 
the head. 
Body, very long, covered with a dense glossy fur ; tail, less than one 
fourth the length of the body, rather stout, depressed, covered with strong 
hairs on the sides. 
Hind-feet, webbed. 
Lichtenstein says this genus has hind-feet like those of the common 
seals, ears resembling those of the seals of the genus Otaria, and a tail 
similar to that of the common Otter. 
He places the Sea Otter (correctly, as we think) between the Otter and 
the seals that possess ears (Otaria). 
Mammae, two — ventral. 
There is only one species in the genus. 
Habit, living principally at sea and in bays and estuaries. 
The generic name is derived from svudpoj, enudros, aquatic ; Gr. sv ; en, in, 
and u Sue, hudor, water. 
ENHYDRA M A R I N A .— E rxle ben. 
Sea Otter. 
PLATE CX NX VII.— Male. 
E. perelongata, cauda depressa, corporis partem quartam aequante, 
pedibus posticis curtis, istis Phocarum similibus, colore castaneo vel nigro, 
vellere mollissimo ; Lutra Canadensis duplo major. 
CHARACTERS. 
Body , very much elongated ; tail, depressed , and one fourth the length of 
the body ; hind-feet, short , and resembling those of the seal ; colour, chcsnut 
brown or black ; twice the size of the common Otter ; fur, exceedingly fine. 
