120 POPULAR OFFICIAL GUIDE. 



POLAR BEARS. 

 Showing a portion of their den and pool cut from the solid rock. 



The bears of North America form four well-defined groups, 

 as follows: 



The Polar Bear. The Alaskan Brown Bears. 



The Grizzly Bear. The Black Bears, and their allies. 



Up to this date (April 1. 1913), 24 species and subspecies 

 have been described, and it is reasonably certain that much 

 more work remains to be done on the members of this group 

 of animals before the status of each valid and invalid species 

 will be rendered thoroughly clear. 



The most noteworthy species are as follows : 



THE MOST IMPORTANT SPECIES OF NORTH AMERICAN BEARS. 



Ursus maritimus, (Desm.), Polar Bear. 

 Arctic regions generally. 



Ursus middendorM, (Merriam), Kadiak Bear. 

 a I Kadiak Is., Alaska. 



? . \ Ursus dalli, (Merr.), Yakutat Bear. 

 *h S 1 Yakutat Bay, Alaska. 

 a> m ) Ursus eulophus, (Merr.), Admiralty Bear. 

 «* H ' Admiralty Is., Alaska. 



Ursus gyas, (Merr.), Peninsula Bear. 

 Portage Bay, Alaska Peninsula. 



