120 PKOCEEDINGS OF THE ACADEMY OF [1894. 



which offered the same striking external features as the first. This 

 animal I tried to purchase, but without success. Several years later 

 I had the good fortune to kill a third specimen, also an old male, in 

 the elevated and rugged region north of the White River, Colorado. 

 The skin and skull were roughly prepared in camp, but were after- 

 ward irrecoverably lost. In November, 1891, the late James E. 

 Cooper, a well-known showman of Philadelphia, procured, at some 

 point on the Union Pacific Railway in Wyoming, and presented to 

 the Zoological Society, another individual, identical in appearance 

 with the three others. This specimen has since died and the skin 

 and skeleton are now in the collection of the Academy. Finally, in 

 the summer of 1893, Prof. E. D. Cope procured in a cave in the 

 Ozark mountains, Missouri, a somewhat broken cranium of the same 

 type, which he has kindly placed at my disposal for investigation. 

 There are, therefore, presented for detailed examination two skulls, 

 a skin and one living specimen now in the Zoological Garden, and 

 while I am not able to give measurements from the skull collected by 

 me in Colorado, the features of the species are so extreme that I am 

 able to state without hesitation its substantial agreement with those 

 now presented. 



Cranial characters. — The first impression made by these skulls is 

 of great breadtli and massive development. The Academy's skull 

 (No. 3,308) is short and broad, offering the following measurements 

 in millimeters: — Basal length 274; basilar length 270; extreme 

 length 288; greatest zvgomatic width 203; post palatal length 123; 

 length of palate 147; breadth between orbits 74; across postorbital 

 processes 105. The Ozark skull has lost a considerable portion of 

 the facial region, but the difference in size between it and 3,308 was 

 small ; the distance from the inferior lip of the foramen magnum to 

 the plane of the front of the fourth premolar, being in the latter 212, 

 while in the Ozark specimen it is 216; in this one the zygomatic 

 width is about 198; interorbital breadth 80; across postorbital pro- 

 cess 114. 



The sagittal crest is high and massive, measuring in each 130 to 

 the point of division into the temporal ridges, which are strong, 

 especially in 3,308. The forehead is very concave, more so than in 

 any bear skull I have seen. In 3,308 it is also transversely con- 

 caves differing from the Ozark specimen, in which the same region 

 is transversely convex. This specimen wds perhaps a female. The 



