BIBLIOGR, APPENDIX— G. PERISSODACTYLA. 1035 



1850. — Gibbes, R. W. Remarks ou the fossil Equus. <[Proc. Am. Assoc. Adv. Sci. iii, 1850, pp. 06-08. 



Holmes, F. S. Remarks on Rob. Gibbes's paper on tbo fossil Equus. <Proc. Am. Assoc. 



Adv. Sci. 1850, pp. 68,69. 

 Leidy, J. [On Rbiuoeeros occidentalis.] <[ Proc. Acad. Nat. Sci. Pbila. v, 1850, p. 119. 

 1851. — Bouley, H. Traite" do l'orgauisatiou du pied de ebeval, comprenant i'etude de la structure, des 



fonctions et des maladies de cet orgaue. Ave c un atlas de24 planches 1 it hographiei-s, dessinees 



d'apres nature par Edm. Poebet. lepartie. Anatomic et pbysiolog e. 8^. Paris, Baillicre 



et fils, 1851. 

 Leidy, J. [On some fossils— i. e., Equus americauus — from Bigbono Lick, Kentucky.] <^Proe. 



Acad. Nat. Sci. Pbila. v, 1851, p. 1-10. 

 Leidy, J. [On some fragments of Paheotberium proutii.] <[ Proc. Acad. Nat. Sci. Pbila. v, 1851, 



p. 170. 

 Leidy, J. [On two species of fossil rbiucceros from Nebraska.] <[Proc. Acad. Nat. Sci. Pbila. 



v, 1851, p. 331. 



[Refers K. nebrascensis and E. occidentalis to Acerotberium.] 



1852. — Hays, I. [Remarks on a tootb of a fossil tapir from North Carolina.] <[ Proc. Acad. Nat. Sci. 

 Pbila. vi, 1852, p. 53. 

 Kneeland, S., jr. [Ou tbe rbiuoeeros' born.] < Proc. Boston Soc. Nat. Hist, iv, 1852, p. 175. 

 Leidy, J. [Reference to a fossil tootb of a tapir — T. baysii, n. sp.] < Proc. Acad. Nat. Sci. Pbila. 



vi, 1852, p. 106. 

 Leidy, J. [Remarks on some fossil teetb of ibiuoceros — R. americauus — from Nebraska.] 



< Proc. Acad. Nat. Sci. Pbila. vi, 1852, p. 29. 



Leidy, J. [Remarks on Tapirus haysii.] < Proc. Acad. Nat. Sci. Pbila. vi, 1852, p. 148. 

 1853.— Joly, N., and Lavocat, A. Etudes anatomiques sur uue mule fissipede anx pieds anterieurs. 



< Comp. Rend. Acad. Sci. Paris, xxxvii, 1853, pp. 337-311. 



1855. —Joly, N., and Lavocat, A. Note sur le systenie digital des equides, improprement appelds mono- 

 dactyles. < Compt. Rend. Acad. Sci. Paris, xli, 1855, pp. 262,263; Institut, xxiii, no. 1129, 

 1855, p. 286. 

 1357.— Skillman, Dr. [On Equus major.] < Proc. Bostou Soc. Nat. Hist, vi, 1857, pp. 303, 304. 

 1858.— Gratiolet, P. Fetus concn par une mule. <Verb. Proc. Soc. Pbilom. Paris, 1858, pp. 41, 42. 



Leidy, J. [Remarks on fossil remains— Procamelus — from Nebraska.] <[ Proc. Acad. Nat. Sci. 

 Pbila. 1858, pp. 89, 90. 

 1859. — Gratiolet, P. Sur l'encc'pbale de l'Oreodon gracilis. < Institut, xxvii, 1859, pp. 52, 53. 

 1860. — Leidy, J. [Remarks on fossil teetb of bippotberium from Washington County, Texas.] <[ Proc. 



Acad. Nat. Sci. Pbila. 1860, p. 410. 

 1863. — Riitimeyer, L. Beitriige zur Kenntniss der fossilen Pferde und zur vergleicbenden Odonto- 



grapbie der Huftbiere iiberbaupt. < Verb, natrf. Gesellscb. Basel, iii, 1803, pp. 558-096. 

 1864. — Burmeister, C. H. C. Descripcion de la Macraucbenia patacbonica. <^Auales del Museo 



publico de Buenos Aires, i, 1804, pp. 32-65, pll. 1-4. 

 1365.— Chabrillac, P. Sur le tapir. < Bull. Soc. Imp. Zool. d'Acclim. (2), ii, 1865, pp. 25-28. 



Gill, T. [Communication respecting a uew generic type of tbe family Tapirid;c — Elasmogua- 



tbus bairdi.] <Proc. Acad. Nat. Sci. Phila. 1865, p. 183. 

 Leidy, J. [Remarks on fossil remains of tbe horse.] <[Proc. Acad. Nat. Sci. Pbila. 1865, p. 94. 

 Leidy, J. [Remarks on fossil rhinoceros.] <[ Proc. Acad. Nat. Sci. Phila. 1805, pp. 170, 177. 

 1866. — Swallow, G. C. Notice of remains of tbe horse in the altered drift of Kansas. <[ Trans. Acad. 



Sci. St. Louis, ii, 1866, p. 418. 

 1867. — Arloing, S. Contribution a l'6tude de Forganisation du pied chez le cheval. < Ann. Sci. Nat. 

 viii, 1807, pp. 55-81, with 2 pll. 

 Dow, J. M. Extracts from letters relating to Tapirus bairdi. < Proc. Zool. Soc. London, 1867, 



pp. 241,891. 

 Flower, W. H. Exhibition of tbe skull of a tapir (Elasmoguathus bairdi, Gill). < Proc. Zool. 



Soc. London, 1867, p. 240. 

 Gill, T. On the genus Elasmoguathus. < Am. Jouru. Sci. and Arts (2), xhii, 1807, p. 370. 

 Gray, J. E. Notice of a new species of American tapir, with observations on the skulls of 

 Tapirus, Rhiuocboerus. and Elasmoguathus in the collection of the British Museum. <[ Proc, 

 Zool. Soc. Loudon. 1867, pp. S70-88O (with 2 figg.), pi. 42. 



