60 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



138. Rhinoceros nebrascensis Leidy. Type and paratype. 



139. Anterior portion of skull containing complete molar- 



premolar dentition, associated with portion of left lower 

 jaw containing five teeth, p 3 -m 3 . White River (Oligo- 

 cene). White River, South Dakota. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1850, "p. 121; Owen's Rept. 

 Geol. Surv. Wis., Iowa, and Minn., 1852, p. 556, pi. 12a, fig. 6. 



= Hyracodon nebrascensis. 

 See Aceratherium nebrascensis. 



114. Rhinoceros occidentalis Leidy. Type. 



Cranium. White River (Oligocene). Bad Lands, South 

 Dakota. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1850, p. 119; 1851, p. 276; 

 Owen's Rept. Geol. Surv. Wis., Iowa, and Minn., 1852, p. 552, 

 pi. 9, figs. 1, 2; Smithsonian Contrib. to Knowl., VI, Art. VII, 

 1854, pp. 81, 114, pis. 12, 13; Journ. Acad. Nat. Sci. Phila. (2), 

 VII, 1869, p. 220, pi. 22. 



= Csenopus occidentalis. 



See Aceratherium occidentale. 



3190. Rhinoceros proterus Leidy. Type. 



Last left upper molar, m 3 . Pliocene. Williston, Levy 

 Count} 7 , Florida. 

 Leidy, Proc. Acad. Nat. Sci. Phila., 1885, p. 33. 



= Aphelops proterus. 

 See Aphelops fossiger. 



mi. Sinopa hians (Cope). See Prototomus hians and Stypolophus 

 hians. 



1018. Sinopa multicuspis (Cope). See Prototomus multicuspis and 



1020. Stypolophus multicuspis. 



1021. 



1025. Sinopa secundarius (Cope). See Prototomus secundarius and 

 Stypolophus secundarius. 



1023. Sinopa strenuus (Cope). See Prototomus strenuus and Sty- 

 polophus strenuus. 



1022. Sinopa viverrinus (Cope). See Prototomus viverrinus and 

 Stypolophus viverrinus. 



2136. Stagodon validus Marsh. Type. 



Anterior portion of right lower jaw containing broken 

 canine and two premolars (p x , p 2 ). Ceratopsbeds (Cre- 

 taceous). Wj^oming. 

 Marsh, Amer. Journ. Sci. (3), XLIU, 1892, p. 256, pi. 8. fig. 7. 



1097. Steneofiber pansus Cope. Type in part. 



Fragments of incisor and limb bones. ' ' Loup Fork ' ' (Mio- 

 cene). New Mexico. 



Cope, Proc. Acad. Nat. Sci. Phila., 1872, p. 222; Rept. U. S. Geogr. 

 Surv. W. 100th Merid., IV, Pt. II, 1877, p. 297, pi. 69, figs. 7-12. 



