TYPE-SPECIMENS OF FOSSIL VEETEBEATES. 51 



1079. Orohippus angustidens Cope. Type. 



Portion of left lower jaw containing three molars, n^-m . 

 Wasatch (Eocene). New Mexico. 

 Cope, Syst. Cat. Vert. Eocene New Mexico, 1875, p. 22. 



= Eohippus angustidens. 



See Hyracotherium angustidens. 



1077. Orohippus cuspidatus Cope. Type. 



Fragment of maxillary bone containing two molars (m 1 , m 2 ). 

 Wasatch (Bocene). New Mexico. 



Cope, Syst. Cat. Vert. Eocene New Mexico, 1875, p. 22. 



See Hyracotherium cuspidatum. 



3753. Orohippus sylvaticus (L,eidy ) . See Lophiotherium sylvaticus. 



1064. Orohippus tapirinus Cope. Cotypes. 



1076. Fragment of right lower jaw containing two molars, m x , m 2 , 



1086. associated with jaws, teeth, and skeleton bones of vari- 



ous individuals. Wasatch (Eocene.) New Mexico. 



Cope, Syst. Cat. Vert. Eocene New Mexico, 1875, p. 20. 



See Hyracotherium tapirinum. 



1057. Orohippus vasacciensis Cope. Plesiotypes. 



1073. Portions of lower and upper jaws containing teeth. 



1074. Wasatch (Eocene). New Mexico. 



Cope, Syst. Cat. Vert. Eocene New Mexico, 1875, p. 21. 

 See Hyracotherium vasacciensis. 



1002. Orotherium cristonense Cope. Type. 



Both lower jaws containing nearly complete dentition. 

 Wasatch (Eocene). New Mexico. 



Cope, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. II, 1877, 

 p. 254, pi. 65, figs. 13, 14. 



See Hyracotherium (Pliolophus) cristonense. 



1 1 28. Orotherium lcevii Cope. Type. 



Portion of left lower jaw containing three premolars (p 2 -pi) 

 and two molars (m 1; m 2 ), associated with a similar por- 

 tion of the right jaw and a portion of the right maxil- 

 lary containing two premolars (p 2 , p 3 ). Wasatch 

 (Eocene). New Mexico. 



Cope, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. II, 1877, 

 p. 257, pi. 65, figs. 15-17. 



= Eohippus lcevii. 



1005. Orotherium vintanum Marsh. Plesiotypes. 



1 100. (1) L/eft maxillary with three molars, n^-m 3 , and third 



premolar, associated with lower molars, m 2 , m 3 , and 

 portions of the skeleton; (2) portion of right lower 

 jaw containing last two molars, m 2 and m 3 . Wasatch 

 (Eocene). New Mexico. 



Cope, Rept. U. S. Geogr. Surv. W. 100th Merid., IV Pt. II, 1877, 

 p. 255, pi. 65, (1) figs. 1-11; (2) fig. 12, 



