MAMMAL URS1DAE URStJS MARITIMUS. 



229 



UKSUS MAKITIMUS. 



Polar Bear. 



Ursus maritimus, Lmv. Syst. Nat. I, 1766, 70. (Under head of U. arctos.) 



E. SABINE, App. Parry's First Voyage, 1824, 183. 



RICH. App. Parry's Second Voyage, 1835, 258. IB. F. B. A. I, 1829, 30. 



HARLAN, F. A. 1825, 51. 



AUD. & BACH. N. A. Quad. II, 1851, 281; pi. xci. 

 Ursus marinus, " PALL. Itinerary." IB. Spicilegia Zoologia, XIV, 1780, p. 1, tab. i. 



Ear scarcely as long as the tail. Thumb much shorter than the outer toe. Crown, forehead, and top of the muzzle lie in 

 one plane. Color snow white. 



I introduce this species merely for the sake of completing the record of American bears, 

 although no specimens were collected by any of the expeditions. For a description of the skull, 

 see its comparison with the skull of Ursus horribilis, as above. 1 



List of specimens. 



1 There is still another North American bear, if it be really different from the grizzly, namely, that described as Ursut arctos, 

 or Barren Ground bear, by Richardson, in Fauna Boreali- Americana. Without any specimens er information other than what 

 is detailed in Richardson, I have nothing to say on the subject. 



