TYPE-SPECIMENS OF FOSSIL VEETEBRATES. 57 



800. Procamelus robustus I^eidy. Paratype. 



Upper molar, m^ lyoup Fork (Upper Miocene). Fort 

 Niobrara, Nebraska. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1858, p. 89; Journ. Acad. Nat. 

 Sci. Phila. (2), VII, 1869, pp. 148, 3S1, pi. 15, fig. 3. 



569. Protohippus mirabilis (I^eidy). See Merychippus mirabilis. 



(Also catalogue numbers 571, 572, 580-582.) 



619. Protohippus perditus (Leidy). Type. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, p. 275, pi. 17, 

 fig- 5- 



See Equus (Protohippus) perditus. 



620. Protohippus perditus Leidy? Plesiotypes. 

 629. (i) Three lower molars of right side, m^-m ; (2) portion of 



right lower jaw containing three teeth, p^, m^, m . 

 Loup Fork (Upper Miocene). Niobrara River, Ne- 

 braska. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, p. 315, pi. 19, 

 (i) fig- 5; (2) figs. 13, 14. 



621. Protohippus placidus Leidy. Cotypes. 

 623. Upper premolar, p^ associated with .six other upper molar 

 625. teeth and three upper cheek teeth, p'^ right, p^ and dp'' 



2365. left. Loup Fork (Upper Miocene). Niobrara River, 



Nebra.ska. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, p. 277, pi. 18, 

 figs, 39-48. 



593. [? Protohippus sp. undet.] 



Portion of left lower jaw containing four teeth, p^-m^. 

 Loup Fork (Upper Miocene). Niobrara River, Ne- 

 braska. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, p. 320, pi. 19, 

 fig. 12 (unnamed). 



[Identified by J. W. Gidley.] 



570. [? Protohippus sp. undet.] 



Series of lower teeth of right side, p^-m . Loup Fork 

 (Upper Miocene). Niobrara River, Nebra.ska. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, pi. 19, figs. 

 II, 28 (unnamed). 



[Identified by J. W. Gidley.] 



627. [? Protohippus sp. undet.] 



Left lower premolar, p^, in fragment of jaw. Loup Fork 

 (Upper Miocene). Niobrara River, Nebraska. 



Leidy, Journ. Acad. Nat. Sci. Phila. (2), VII, 1869, p. 315, pi. 19, 

 fig. 24 (unnamed). 



[Probably a Protohippus. J. W. Gidley.] 



