374 EXTINCT MAMMALIA OF NORTH AMERICA. 



recent, though they may be the remains of animals which had been imbedded in ice 

 for ages. One is a cranium with both horn cores, accompanied by a ramus of the 

 lower jaw, much weather-worn and covered with lichens, A second is a cranium, 

 and a third the upper portion of one, both with the bases of the horn cores, and both 

 weather-worn. The remaining specimen consists of a portion of one side of the 

 cranium, with the horn core and enveloping horn nearly perfect. 



Ovibos bombifroras. 



Animal allied to the Bison, Wistar : Trans. Am. Philos. Soc. 1818, 379, PI. XI, Figs. 10, 11. 



Bos bombijrons, Harlan : Fauna Amer. 1825, 271 ; Edinb. New Philos. Jour. 1834, XVII, 359 ; 

 Med. Phys. Res. 1835, 275; Trans. Geol. Soc. Pennsylvania, 1835, 71. Cooper, Smith and 

 DeKay: Am. Jour. Sc. 1831, XX, 370; Edinb. New Phil. Jour. 1831, XI, 353. Cooper: 

 Month. Am. Jour. Geol. 1831, 43, 173, 206. DeKay : An. Lye. Nat. Hist. New York, 1838, 

 286 ; Nat. Hist. New York, Pt. I ; Zool. 1842, 110. Meyer : Nov. Act. Ac. Nat. Cur. 1835, 

 143. Pictet: Traits d. Paleont. 1844, I, 310 ; 1853, L 366. 



Wistar's Fossil Ox, Godman : Am. Nat. Hist. 1828, III, 243, PI. 



Bos (Bison f) bomhifrons, Meyer : PaliBologica, 1832, 97. 



Ovibos bombifrons, Leidy : Proc. Ac. Nat Sc. 1852, 71. 



Booiheriurn bombifrons, Leidy : Proc. Ac. Nat. Sc. 1852, 71 ; 1854, 210 ; Mem. Ext. Sp. Am. Ox, 

 iu Smith. Contrib. 1852, 17, PL IV, Fig. 2, PL V. 



Bos (Bootherium) bombifrons, Bronn : Leth. Geog. 1856, 981, PL LV, Fig. 9. 



Ovibos priscus, Rtitimeyer : Verb. Naturf. Gesells. in Basel, 1866, 328. 



Indicated by an imperfect sltull found at Big-bone-lick, Kentucky, the only fossil 

 characteristic of the species which has yet been discovered. The specimen in form 

 bears considerable resemblance with the corresponding portion of the skull of a Musk 

 Bull, sixteen months old, represented in figure 2, plate IV, of the Zoology of the 

 Voyage of the Herald. It is, however, of mature age, as the interfrontal, fronto- 

 parietal and occipito-parietal sutures are completely obliterated. Quaternary. 



Ovibos cavifrons. 



Bos pallasii, in part of DeKay : An. Lye. Nat. Hist. New York, 1828, II, 291, PL VI ; Edinb. 



New Phil. Jour. 1828, V, 327 ; Nat. Hist. New York, Pt. I; Zool. 1842, 10. Cooper: Month. 



Am. Jour. Geol. 1831, 173, 206. Harlan : Edinb. New Philos. Jour. 1834, XVIL 359 ; Med. 



Phys. Res. 1835, 276 ; Trans. Geol. Soc. Pennsylvania, 1835, 72 in part. Meyer : Palreologica, 



1832, 97 ; Nov. Act. Ac. Nat. Cur. 1835, 155 in part. Geinitz : Versteinerungskimde, 1846, 



55 pt. Giebel : Fauna d. Vorwelt, I, 1847, 154. Pictet : Traite d. Paleout. I, 1853, 366. 

 Bos bombifrons, Agassiz : Proc. Am. Assoc. Cincinnati, 1851, V, 179. John : Ibidem, 235. 

 Ovibos cavifrons, Leidy : Proc. Ac. Nat. Sc. 1852, 71. 

 Booiheriurn cavifrons, Leidy: Proc. Ac. Nat. Sc. 1852,* 71; 1854, 209, 210; Mem. Ext. Sp. Amer. 



Ox, in Smith. Contrib. 1853, 12 ; Waile's Rep. on the Agric. and Geol. Mississippi, 1854, 286. 

 Ovibos maximus, Richardson : Zool. Voy. Herald, 1854,t 25, PI. XI, Figs. 2-4. Leidy : Pr. Ac. 



Nat. Sc. 1854, 210. 

 Ovibos priscus, Riitimeyer: Verb. Naturf. Gesells. in Basel, 1866, 328. 



* Proceediugs, May 4th, 1852. The number for May and June, distributed in July, 

 t Page 120 remarks, " first part of Zoology Voy. Herald came out October, 1852." 



