78 Merriam Two New Sears from Alaska. 



this I take pleasure in naming it in honor of Mr. Kidder, who 

 has brought back the first series of skins and skulls, accom 

 panied by reliable data, of the Alaska brown bears, and who 

 has generously presented the type specimen to the Biological 

 Survey Collection of the U. S. National Museum. 



In the same connection I have examined the large Alaska 

 Peninsula bear, of which the Biological Survey Collection now 

 contains a fine series of skulls. Briefly, this bear proves to 

 differ so markedly from both the Kadiak and Yakutat bears 

 that I am obliged to name it also, and have recognized it as a 

 subspecies of Ursus dalli, with which its range is probably con 

 tinuous. 



Ursus dalli gyas subsp. nov. 



Type from Pavlof Bay, Alaska Peninsula. No. 91669 $ ad. U. S. 

 National Museum, Biological Survey Collection. Collected in 1897 by 

 Willie Pavlof. Original No. 1052 X. 



Characters. Similar to Ursus dalli but very much larger; about the 

 size of Ursus middendorffi from Kadiak Island. 



Skull similar in general to that of dalli but much larger, heavier and 

 more massive; postpalatal region much longer; f rentals and vault of 

 cranium higher and less flattened; rostrum longer and much more 

 elevated; anterior nares very much larger, particularly higher; teeth 

 larger. 



Prom Ursus middendorffi of Kadiak Island, with which I originally 

 confounded the big Alaska Peninsula Bear, it may be distinguished at 

 once by the much smaller anterior nares. The nares are much larger 

 than in dalli but much smaller and less flaring than in middendorffi. It 

 differs from middendorffi further in having the frontal region less ele 

 vated, the median sulcus much more strongly marked; postpalatal re 

 gion longer; paroccipital processes larger, more outspreading, and sit 

 uated more posteriorly; heel of last upper molar cut off obliquely on 

 outer side (instead of bluntly rounded). 



Measurements. Type skull: basal length 390; zygomatic breadth 285; 

 palatal length 212; postpalatal length 177; occipito-sphenoid length 112. 



Ursus kidderi sp. nov. 



Type from Chinitna Bay, Cook Inlet, Alaska. No. 116,562 $ yg. ad., 

 U. S. National Museum, Biological Survey Collection. Collected June 

 9, 1901 by James H. Kidder. 



Characters. Size large, equal to or slightly larger than Ursus horri- 



