335 



MEGACE^OPS* s. Megacemtops. 

 Megacerops qoloradensis. 



Leidy : Pt. Ac. Nat. Sc. 1870, 1 ; Haydeu's Reii. Geol. Sur. Wyomiug, 1871, 352. 

 Megaceratops color adoensis. Cope: Pr. Ac. Nat. Sc. 1873, 102; Pr. Am. Phil. 

 Soe. 1873. 



Described page 239, and represented by Figs. 2, 3, Plate I, and Fig. 2, 

 Plate II. 



Before the discovery of the more characteristic specimens of the skulls of 

 species of Uiiitatheriuni, from the nearer resemblance of the fossil described 

 under the name of Megacerops to the corresponding part of Sivatherium, 

 the animal to vvliicli it belonged was supposed to be a ruminant. It now 

 appears probable that Megacerops forms a member of the same order, what- 

 ever that may l)e, with Uintatherium. 



Rodentia. 



SciURIDyE. 



PARAJHYS. 

 Paramys delicatus. 



Leidy: Pr. Ac. Nat. Sc. 1871, 231; Ilaydeii's Kep. Geol. Sur. Montana, 1872, 

 357. 



Described page 110, and represented hy Figs. 23 to 25, Plato VI. From 



the Bridger Eocene of Wyoming. 



Paramys delicatior. 



Leidy : Pr. Ac. Nat. Sc. 1871, 231 ; Haydeu's Rep. Geol. Sur. Montana, 1872, 357. 

 Described page 110, and represented by Figs. 26, 27, Plate VI, and Figs. 

 16 to 18, Plate XXVII. From the Bridger Eocene of Wyoming. 



Paramys delicatissimus. 



Leidy: Pr. Ac. Nat. Sc. 1871, 231 ; Hayden'sEep. Geol. Sur. Montana, 1872,357. 

 Described page 111, and represented by Figs. 28, 29, Plate VI. From 

 the Bridger Eocene of Wyoming. 



SCIUPtAVUS ! 



Marsli : Am. Jour. Sc. 1871, 122. 

 A tooth supposed to pertain to this genus is described on page 113, and 

 represented in Fig. 30, Plate VI. From the Bridger Eocene of Wyo- 



* For the sake of l)oth brevity and euphony, I have preferred to use Jlegaccrops 

 instead of Megaeeratoiis, ju.st as Megatherium is preferred toMegalolheriiun, &c. 



