334 srppLEMEiTT. 



true molars; from Hordwell. Described by Wright in 

 the ' Ann. Mag. Nat. Hist.' ser. 2, vol. x. p. 87 (1852). 



Wright Collection. Purchased, 1887. 



Family ANOPLOTHERIIDiE (pt. ii. p. 182). 



Genus XIPHODON (pt. ii. p. 182). 



Xiphodon cayluxensis^ Lydekker (n, sp.). 



This specific name is applied to the small Xiphodon of which the 

 immature mandibular ramus is figured in pt. ii. p. 186, under the 

 provisional name of X. gehjensis. That species according to Schlosser ^ 

 is not a Xiphodon at all, but is allied to Gelocus, and is made the 

 type of the new genus Phaneromeryx. A very large species of 

 Xiphodon from the Quercy Phosphorites has been described by FilhoP 

 under the name of X. magnus. 



Family OEEODONTID^ (pt. ii. p. 207). 



Genus EPOREODON (pt. ii. p. 209). 

 Eporeodon jacksoni (Leidy ^). 



Syn. Eucrotaphus jacksoni, Leidy*. 



Oreodon huUatus, Leidy ^. 



Oreodbn occidentalis, Marsh ^. 

 Eporeodon occidentalis, Marsh '''. 

 Eucrotaphus occidentalis. Cope ^. 



The synonymy is given on the authority of Cope ^, who includes 

 under this specific name three forms to which he has applied distinct 

 varietal names, with the suggestion that they may be of specific 

 value; the length of the upper series of cheek-teeth varies from 

 0,099 to 0,086 ; the largest form being superior in size to E. major 

 (pt. ii. p. 209), while the smallest agrees in this respect with 

 Oreodon culhertsoni (pt. ii. p. 207). The species is distinguished 

 from E. trigonocephalus (Cope) by the palato-narial border being in 



1 Morphol. Jahrb. vol. xii. p. 95 (1886) ; see also p. 296 of the same volume. 



2 Ami. Soc. Sci. Phys. Nat. Toulouse, 1884, p. 40. 



3 Proc. Ac. Nat. Sci. Philad. vol. v. p. 92 (1850, vol. dated 1852).— Eucro- 

 taphus. * -^^^- ^«^- 



6 Quoted in Eep. U.S. Geol. Surv. Terr. vol. i. p. 318 (1873). 

 6 Amer. Journ. ser. 3, vol. v. p. 409 (1873). 

 ^ Rid. vol. ix. p. 250 (1875). 



8 Bull. U.S. Geol. Surv. Terr. vol. v. p. 59 (1879). 



9 Proc. Araer. Phil. Soc. vol. xxi. p. 517 (1884). 



