50 The Grizzly Bear 



brown bear of Yakutat Bay and the coastal slope of the 

 St. Elias range, Ursus Dalli Merriam, are the represent- 

 atives of a very distinct type. They resemble the grizzly 

 in the flatness of their skulls, but are much larger, are dif- 

 ferent in color, have more curved foreclaws, and the Sitka 

 bear has a different type of sectorial tooth. The Yakutat 

 Bear is much larger than the Sitka Bear, and has very 

 different teeth. It may represent a different section. 



5. The gigantic fish-eating bear of Kodiak Island and 

 the Alaska Peninsula, Ursus Middendorffi Merriam, is the 

 largest of living bears and differs markedly from all other 

 American species. It closely resembles the Great Brown 

 Bear of Kamchatka, Ursus Beringiana MiddendorflF, 

 which it slightly exceeds in size. The extraordinary ele- 

 vation and narrowness of the forehead suffice to distin- 

 guish this bear from all other known species. 



The number of full species of North American bears 

 here recognized is ten : four of the Black Bear group, two 

 of the Grizzly group, three of the big brown bears of 

 Alaska, and the Polar Bear. 



These ten species are as follows: 



The Polar Bear, Thalarctos Maritimus Linn. 

 The Common Black Bear, Ursus Americanus 



Pallas. 



The Louisiana Black Bear, Ursus Luteolus Grif- 

 fith. 



The Florida Black Bear, Ursus Florldanus Mer- 

 riam. 



The St. Elias Black Bear, Ursus Emmonsi Dall. 

 The Rocky Mountain Grizzly, Ursus Horribilis 

 Ord. 



