760 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



to the confusion existing in the nomenclature of our fossil bison, and I 

 also regret that I find myself compelled to differ from Mr. Rhoads, to 

 whom I am under many obligations. The fact remains, however, that 

 the type of B. antiquus, imperfect as it is, agrees in every particular 

 with the horn cores of the California specimen, and there can be no 

 question as to their specific identity. 



Remains of Bison antiquus have been found at the following locali- 

 ties: Big Bone Lick, Kentucky; Alameda County, California, in post- 

 pliocene gravel, associated with bones of Elephas, Mastodon^ Uquus, 

 and Procavielus; Pilarcitos Valley, California, in blue clay, 21 feet 

 below the surface. 



The teeth found at Darien, Georgia, are not definitely aseribable to 

 B. antiquus, and are considerably smaller than the specimens noted 

 from California. It is probable that they axjpertain to B. latifrons. 



An imperfect ramus, probably of this species, from Alameda County, 

 California, is characterized by its size, being very much larger in every 

 way than any example of jB. bison, although perhaps best shown by the 

 length of the tooth series, which is 0.197 mm. in B. antiquus and but 

 0.164 mm. in B. bison. 



The type of antiquus is unfortunately very imperfect and much water- 

 worn, the upper and lower surfaces having lost much the most. The 

 restoration of this is largely guesswork, but as well as may be esti- 

 mated the vertical diameter is 120 mm., the transverse 128 mm., the 

 circumference 300 mm., the length along upper curve 340 mm. 



Measurements of horn cores of Bison antiquus. 



BISON CRASSICORNIS Richardson. 



(Plates LXXIII-LXXVI.) 



Bos urus BucKLAND, Beechey's Voy. to the Pacific, 1831, II, p. 539, pi. iii, figs. 1-7. 

 Bison priscus ? Richardson, Zool. Voy. of Herald, 1852-54, pp. 33, 139, pis. vi, 



figs. 5, 6 ; VII ; x, figs. 1-6 ; xiii, fig. 3. 

 Bison crassicornis Richardson, Zool. Voy. of Herald, 1852-54, pp. 40, 139, pis. ix, 



XI, fig. 6; XII, figs. 1-4; xiii, figs. 1,2; xv, figs. 1-4. 

 Bison crassicornis Leidy, Proc. Acad. Nat. Sci., Phila., 1854, p. 210. 

 Bison priscus Leidy, Proc. Acad. Nat. Sci., Phila., 1854, p. 210; Ext. Mam.N. A., 



1869, p. 371. (Jouni. Acad. Nat. Sci., Phila., new ser., YII.) 

 Bison latifrons Leidy, Ext. Mam. N. A., 1869, p. 371 (Journ. Acad. Nat. Sci., 



Phila., new ser., VII), in part. 

 Bison OM<i5f«M8 Allen, The Am. Bisons, Living and Extinct, Cambridge, 1876 



(Memoirs Geol. Surv., Kentucky, I, Pt. 2), in part, pp. 21-26. 



