160 



FEET AND RHINABIUM OF THE POLAR BEAR. 



Urstis and Eimrctos in having well- developed supratragus and 

 basal ridges, with a narrow notch between the angular tragus 

 and the much less prominent antitragus*. 



Text-figure 1. 





'(.' 







D 



A. Lower side of right fore foot of Thalarctos maritimus. 



B. The same of tlie liind foot. 



C. Hind foot of the same with hairs omitted to show the separation and 



interdigital integument of the digits. 



D. Rhinarium of the same from the front. 



* For descriptions of the ears, rhinarium, and feet of other Bears, see Proc. Zool. 

 goc. 1914, pp. 929-941, and Ann. Mag. Nat. Hist. (9) i. pp. 375-384 (1918). 



