100 Cincinnati Society of Natural History. 
In 1873, Prof. E. D. Cope* described, from the Bridger Group of 
Bitter creek, and Cottonwood creek; Limnohyus levidens; from a bluft 
on Green river, near the mouth of the Big Sandy, Wyoming, Palwosy- 
ops fontinalis; from the summit of Church Butte, Trionyx heteroglyp- 
tus;+ from the Bad Lands of Cottonwood creek, 7. scutumantiquum, 
Pappichthys plicatus, P. sclerops, P. levis, P. symphysis, Ehineastes 
radulus ; from Ham’s Fork, Bena ponderosa, Clastes anax ; from the 
Green River Group, near Evanston, Utah, Bathmodon latipes; from 
near Black Buttes, Hmys euthnetus, HL. megaulax, HL. pachylomus; from 
Upper Green river, Pappichthys corsoni, Rhineastes calvus, R. arcua- 
tus; from Green river basin,{ Antiacodon furcatus, now Sarcolemur 
Jurcatus, Orotherium (now Hyracotherium) index; from Cottonwood 
creek, Microsyops vicarius, Oligotomus cinctus ; from South Bitter 
creek, Paramys leptodus, Hobasileus galeatus, Achenodon insolens, 
from Henry’s Fork, Paleosyops diaconus, Hyruchyus implicatus; from 
near Evanston, Phenacodus primevus. 
He described, from the Miocene of Colorado.§ Hyopsodus mini- 
mus, Hypertragulus calcaratus, H. tricostatus, and Menotherium 
lemurinum; from the Miocene of the Western plains,|| Aelurodon mus- 
telimus, now Mustela parviloba, Aphelops megalodus, Paleolagus 
agapetilius,@ Colotaxis cristatus, Hyracodon quadriplicatus, now An- 
chisodon quadriplicatus, H. arcidens, Symborodon torvus, Miobasile- 
us ophryas, Megaceratops acer, M. helocerus, Peltosaurus granulosus, 
Testudo amphithorax, T. cultratus, 7. laticuneus, T. ligonitus, Domnina 
gradata,** Herpetotherium fugax, Daptophilus squalidens, Tomarctus 
brevirostris, Stibaru obtusilobus, Canis gregarius, Isacis (now Mio- 
dectes) caniculus, Paleolagus triplex, P. turgidus, Trictum avunculus, 
T. leporinum, T. paniense, Gymnoptychus minutus, G. nasutus, G. 
trilophus, Anchitherium cuneatum, and Trimerodus cedrensis, 
Prof. O. C. Marsht+ described, from the Eocene deposits of Wyoming 
and Oregon, Dinoceras mirabilis, Orohippus agilis, Colonoceras agres- 
tis, Dinoceras lucaris, Oreodon occidentalis, Rhinoceras’ annectens 
R. oregonensis, Tillotherium hyracoides ; from the Miocene of Colora- 
& Si eee 
* Proc. Am. Phil. Soc., vol. xili. 
+ U.S. Geo. Sur., Wyoming, ete. 
t Pal. Bull. vol. xii. 
2 Proc. Acad. Nat. Sci. 
| Pal. Bull. vol. xiv. 
q Pal. Bull. No. xv. 
** Pal. Bull. No. xvi. 
7+ Am. Jour. Sci. and Arts, 3d ser,, vol. v. 
