326 SUPPLEMENT. 



Palseolagus haydeni, Lcidy '. 



This is the type species ; m- 3 is cylindrical, not grooved, and 

 smaller than pm. 2. This species is regarded as the progenitor of 

 the existing Lepus sylvaticus. 



Hob. N. America. 



M. 2565. Fragment of the left maxilla, showing the six cheek-teeth; 

 from the Miocene of the White River, Colorado, U.S.A. 



Presented by R. Lydekker, Esq., 1885. 



M. 2565 a. Part of the right ramus of the mandible, with the five 

 cheek-teeth ; from the White River. 



Presented by R. LydeJcJcer, Esq., 1885. 



Palseolagus turgidus, Cope 2 . 



This species is considerably larger than the preceding ; and differs 

 in the structure of the upper molars. 

 Hob. N. America. 



M. 2564. Fragment of a mandibular ramus, with three teeth ; from 

 the Miocene of the White River, Colorado, U.S.A. 



Presented by R. LydeTcTcer, Esq., 1885. 



Order UNGULATA. 



Suborder ART1ODACTYLA. 



Family BOVID^E (pt. ii. p. 1). 



Genus BOS (pt. ii. p. 1). 

 fttrt taurutf, var. primigenius (pt. ii. p. 2). 



M. 3686. Cast of the calvarium and horn-cores. The original from 

 the Pleistocene of Italy. 



Presented by J. B. Pentland, Esq., 1852. 



Genus COBUS (pt. ii. p. 53). 

 Cobus (?) palaeindicus (pt. ii. p. 53). 



M. 487. The imperfect cranium ; from the Siwalik Hills. Noticed 

 by the writer in the ' Palacontologia Indica,' ser. 10, vol. iv. 

 P- 13 * Cautley Collection. Presented, 1842. 



' Proc. Ac. Nat. Sci. Philad. vol. viii. p. 89 (1856, vol. dated 1857). 

 Ann. Rep. U.S. Geol. Surv. Terr. (Hayden) for 1873, p. 479 (1874). 



