190 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



the time when the Equus beds were deposited. In 1913 L. H. Miller ^ 

 announced the discovery of remains of Bison, Equus, and a camelid 

 in the upper San Pedro Pleistocene, at San Pedro, California. 

 Recently J. W. Gidley ^ reported that a phalange of a camel had been 

 found associated with bones and teeth of Elephas primigpnius, Equus, 

 and Bison, on the Old Crow River, Yukon Territor3^ It is the 

 understanding of the present writer that these bones and teeth were 

 found in recent deposits along the river and at different points. 

 While it is probable that they had been washed out of deposits of 

 the same age it is not certain that they were. In 1871 E. D. Cope 

 reported bones of Bos or Bison from Port Kenned}?- Cave, not far 

 from Philadelphia. From the same cave there was later described the 

 genus Teleopternus , which was supposed by Cope to belong among the 

 camels, but about which there exist doubts. 



The horn-cores here referred to are much damaged and present the 

 appearance of having been broken from the skull by human hands; 

 but of the skull no part is present. One horn-core seems to extend 

 to the base, but this is not wholly certain. One presents 460 mm. of 

 the distal end in an uninjured condition; the other presents about the 

 same length, with only a little of the tip missing. Apparenth" the 

 length of the better horn-core along the upper surface was 660 mm.; 

 along the lower curve the length was not far from 750 mm. Owing 

 to the parts missing at the base, it is not possible to determine the 

 diameters at that point. At a distance of 500 mm. from the tip of 

 the horn-core the fore-and-aft diameter is 120 mm.; the vertical 

 diameter, 82. In the type the diameters at the same distance from 

 the tip are, respectively, 130 mm. and 108 mm. It will be seen, 

 therefore, that the cores of the Idaho specimen are slenderer and much 

 more flattened. If we determme the index curvature as in other cases 

 it is close to 125; in the type it is 136.5, the curvature here being 

 greater. These indices agree closely with those of the specimens 

 from Alaska. 



The basal half of the cores is rather strongly and sharply ridged 

 and grooved; the distal half has the ridges and grooves broader, but 

 usually not so sharply defined. On the concave side of the distal 

 half or more there is a deep channel which widens to the tip of the 

 core. A similar groove is seen in the type and a less conspicuous one 

 in the horn-cores of the Alaska skull. 



These horn-cores are referred to B. alleni despite the much greater 

 degree of flattening which they present. This flattening does not 

 appear to be at at aU due to any post-mortem distortion. 



Hilzheimer ^ ventured to remove from Bison priscus a skull, well 

 preserved and retaining the horn-sheaths, which had been found on 



lUniv. California Pub. Geol., vol. 7, p. 115. 



3 Smiths. Misc. Coll., vol. 60, p. 1. 



» Sltz-Ber. Ges. Naturf. Freunde, Berlin, 1910, p. 144, figs. 8, 9. 



