390 UROCYON. URSUS. 



Measurements. Total length, 795; tail vertebrae, 298; hind 

 foot, 112. 



953. Urocyon dementae Merriam. 



Urocyon clet}ienUB Menr., Proc. Biol. Soc. Wash., xvi, 1903, p. 75. 

 San Clemente Island Gray Fox. 



Type locality. San, Clemente Island, Santa Barbara Islands, 

 Santa Barbara County, California. 



Geogr. Distr. San Clemente Island only. 



Genl. Char. Similar to U. c. littoralis, but smaller; nasals broadest 

 in the middle, tapering posteriorly; bullae more inflated; camassial 

 and molars small. 



Color. Like U. c. littoralis. 



Measurements. Average of 6. Total length, 688; tail vertebrae, 

 250; hind foot, 100. (Dry skin.) (Merr. I. c.) 



Family IV. Ursidje. Bears. 



Subfamily I. XJrsinse. 

 Genus 117. Ursus. 



Ursus Linn., Syst. Nat., i, 1758, p. 47; i, 1766, p. 69. Type Ursiis 

 arctos! Linnaeus. 

 Danis Gray, in Thoms. Ann. of Phil., xxvi, 1825, pp. 60, 339. 

 Thalarctos! Gray, in Thoms. Ann. of Phil., xxvi, 1825, p. 62. 

 Thalassarctos! Gray, in Thoms. Ann. of Phil., xxvi, 1825, p. 339. 

 Euarctos! Gray, Proc. Zool. Soc, 1864, p. 692. 



Subgenus A. Thalassaictns. Polar Sear. 



954. Ursus maritimus Phipps. 



Urstis tnaritimus Phipps, Voy. N. Pole, 1774, p. 185. Elliot, Syn. 



N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 310, pi. xxxii. 



Zool. Ser. 

 Polar Bear. 



Type locality. Spitzbergen. 



Geogr. Distr. Arctic regions of both hemispheres. 



Subgenus B. Uisns. Brown Bears. 



955. Ursus middendorffi Merriam. 



Urstis middendorffi Merr., Proc. Biol. Soc. Wash., x, 1896, p. 69. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 310. 

 Zool. Ser. 



