26 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1989. Bison latifrons (Harlan). Plesiotype. 



Right metacarpal. Pliocene. Peace River, Florida. 

 Lucas, Proc. U. S. Nat. Mus., XXI, 1899, pi. 83. 



4157. Bison occidentalis I^ucas. Type, 



Cranium and horn core. Pleistocene. Fort Yukon, Alaska. 



Lucas, Science (2), VIII, 1898, p. 678; Proc. U. S. Nat. Mus., XXI, 

 1899, P- 758, pi. 65. 



2360. Blastomeryx gemmifer Cope. See Dicrocerus gemmifer. 



4941. Brontops dispar Marsh. Type, 



Skull and lower jaws with complete dentition. White River 

 (Oligocene). South Dakota. 



Marsh, Amer. Journ. Sci. (3), XXXIV, 1887, p. 328, text figs. 7, 8, 



= Megacerops dispar. 



4258. Brontops dispar Marsh. Paratype. 



Skull. White River (Oligocene). South Dakota. 



Marsh, Amer. Journ. Sci. (3), XXXIV, 1887, p. 327, text figs. 5, 6. 

 = Megacerops brachycephalus. 



4944. Brontops validus Marsh. Type. 



Skull. White River (Oligocene). South Dakota. 



Marsh, Amer. Journ. Sci. (3), XLII, 1891, p. 269. 



= Megacerops dispar. 



4273. Brontotherium hypoceras (Cope). Plesiotype. 



Skull. White River (Oligocene). Bad Lands, South Da- 

 kota. 



Osborn, Bull. Amer. Mus. Nat. Hist., XVI, 1902, p. 106, text fig. 11. 

 4249. Brontotherium leidyi Osborn. Type. 



Osborn, Bull. Amer. Mus. Nat. Hist., XVI, 1902, p. 105, text figs. 9,10. 



See Menops varians. 



4256. Brontotherium medium (Marsh). See Titanops medius. 



114. Caenopus occidentalis (L,eidy). See Rhinoceros occidentalis 

 and Aceratherium occidentale. 



1017. Calamodon arcamcenus Cope. Type. 



Portions of right and left mandibular ramus containing teeth, 

 associated with fragments of incisors and two molars. 

 Wasatch (Eocene). New Mexico. 



Cope, App. FF, Ann. Rept. Chief Engineers, in Rept. Sect'y War, 

 II, Pt. II, 1874, p. 594; Rept. U. S. Geogr. Surv. W. looth Merid., 

 IV, Pt. II, 1877, p. 163, pi. 42, figs. 1-5. 



1014. Calamodon arcamcenus Cope. Paratypes. 



1015. (i) lyOwer incisor associated with skeletal fragments; (2) 



portion of lower incisor. Wasatch (Eocene). New 

 Mexico. 



Cope, App. FF3 Ann. Rept. Chief Engineers, in Rept. Sect'y War, 

 II, Pt. II, 1874, p. 594; Rept. U. S. Geogr. Surv. W. 100th 

 Merid., IV, Pt. II, 1877, p. 163, (i) pi. 41, figs. 13-17; (2) pi. 

 44, figs. I-IC. 



