URSUS. THALARCTOS. 129 



is less broad in proportion to its length; length of tooth row is less 

 and the teeth are smaller. 



Color. Pelage intensely black. Ex -type in American Museum of 

 Natural History. 



Measurements. Skull : Total length, 253; occipito-nasal length, 220; 

 Hensel, 225; intertemporal length, 88.1; length of nasals, 66.9; length 

 of upper molar series, 75.3; zygomatic width, 142; palatal length, 

 121.2; length of m 1 , 24.5; length of mandible, 173; length of lower 

 molar series, 72. Ex type in American Museum of Natural History. 



Ursus americanus pugnax Swarth. 



Ursus americanus pugnax Swarth, Univ. Calif. Pub. Zool., VII, 



1911, p. 141. 

 Type locality. Rocky Bay, Dall Island, Alaska. 



Ursus alexandrae Merriam. 



Ursus alexandrce Merr., Proc. Biol. Soc. Wash., XXVII, 1914, 



p. 174. 

 . Type locality. Kusilof Lake, Kenai Peninsula, Alaska. 



Genl. Char. Size large; skull long, narrow; rostrum very broad; 

 sagittal crest long, high ; claws very long. 



Color. General hue uniform- pale brown (varying among individ- 

 uals to light reddish brown or grayish yellow); yellowish brown 

 between ears; legs and feet slightly darker. Type in United States 

 National Museum. 



Genus Thalarctos. 



Thalarctos maritimus ungavensis Knottnerus-Meyer. 



Thalarctos maritimus var. ungavensis Knottnerus-Meyer, Sitzungsb. 



Gesell. Naturf. Freunde, Berlin, 1908, p. 181. 

 Type locality. Ungava Bay, Ungava, Canada. 



Thalarctos eogroenlandicus Knottnerus-Meyer. 



Thalarctos eogroenlandicus Knottnerus-Meyer, Sitzungsb. Gesell. 



Naturf. Freunde, Berlin, 1908, p. 182. 

 Type locality. Pack ice off coast of eastern Greenland. 



Thalarctos labradorensis Knottnerus-Meyer. 



Thalarctos labradorensis Knottnerus-Meyer, Sitzungsb. Gesell. 



Naturf. Freunde, Berlin, 1908, p. 183. 

 Type locality. Okak, Labrador. 



Ursus arctos schwenki Shoemaker. 



Ursus arctos schwenki Shoemaker, Stories of Great Pennsylvania 

 Hunter, 1913, p. 25. 



