TYPE-SPECIMENS OF FOSSIL VERTEBRATES. 43 



1060. Hyracotherium angustidens (Cope). Plesiotypes. 



1080. (1) Portion of left lower jaw containing three molars, m 1 -m 3 , 



1081. associated with upper jaw containing teeth of both sides; 

 1087. (2) last two upper molars of right side, m 2 and m 3 ; 



(3) portion of left lower jaw containing two premolars, 

 p 3 and p 4 ; (4) fragment of left lower jaw containing 

 three teeth, p i; m 1( and part of m 2 : Wasatch (Eocene). 

 New Mexico. 



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

 p. 265, pi. 66, (1) figs. 1, 2; (2) figs. 4, 4a; (3) fig. 5; (4) fig. 6. 



= Bohippus index. 



1002. Hyracotherium (Pliolophus) cristonense (Cope). Type. 



Wortman, Bull. Amer. Mus. Nat. Hist., VIII, 1896, p. 102, text fig. 

 11, pi. 2, fig. 1. 



= Orotherium cristonense. 



1077. Hyracotherium cuspidatum (Cope). Type. 



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

 pp. 262, 267, pi. 65, fig. 18. 



= Orohippus cuspidatus. 



1064. Hyracotherium tapirinum (Cope). Cotypes. 



1076. Cope; Rept tj s. Geogr. Surv. W. 100th Merid., IV, Pt. II, 1877, 



1086. p. 263, pi. 66, figs 12-16. 



= Orohippus tapirinus. 



1057. Hyracotherium vasacciensis (Cope). Plesiotypes. 



io 73- Cope, Rept. U. S Geogr. Surv. W. 100th Merid., IV, Pt. II, 1877, 



1074. p. 264, pi. 66, figs. 7-1 1. 



= Orohippus vasacciensis. 



1 1 80. Hystrix (Hystricops) venustus L,eidy. T}'pe. 



Two molars. Loup Fork (Upper Miocene) . Niobrara River, 

 Nebraska. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1858, p. 22; Journ. Acad. Nat. 

 Sci. Phila. (2), VII, 1869, pp. 343, 407, pi. 26, figs. 23, 24. 



= Erethizon venustus. 



2142. Laodon venustus Marsh. Type. 



Left lower jaw containing three premolars and six molars. 

 Morrison (Jurassic). Wyoming. 

 Marsh, Amer. Journ. Sci. (3), XXXIII, 1887, p. 337, pi. 9, fig. 5. 



157. Leptomeryx evansi Leidy. Type. 



Imperfect cranium, part of right ramus. White River 

 (Oligocene). White River, South Dakota. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1853, p. 394; Journ. Acad. Nat. 

 Sci. Phila. (2), VII, 1869, pp. 165, 383, pi. 14, figs. 1-8. 



