BIBLIOGR. APPENDIX— G. PERISSODACTYLA. 1035 



1850.— Gibbes, R. W. Roinarka oii tho fossil Equus. <Proc. Am. Assoc. Adv. Sci. iii, 1850, pp. 06-C8. 



Holmes, F. S. Remarks on Eob. Gibbes's paper on the fossil Equus. <[Proc. Am. Assoc. 



Adv. Sci. 1.--50, pp. (it*, 09. 

 Leldy, J. (Ou Kbinoceros occidcntalis.] < Proc. Acad. Nat. Sci. PUila. v, 18.'>0, p. 119. 

 1851.— Bouley, H. Traite de I'orgauisation du jiied de cbeval, compreuaut i'6tudo de la structure, des 

 I'oiictious et des maladies de cct organe. Avec un atlas de 24 planchcslilbograpbi6es, dessimSes 

 d'aprfes nature par Edm. Pocbet. le partie. Anatomio et jibysiolog e. 8^. Paris, Baillifcre 

 et tils, 1851. 

 Iieidy, J. [On some fossils — j. o., Equus amerieanus — from Bigbone Lick, Kentucky.] <^Proc. 



Acad. Nat. Sci. Pbila. v, 1851, p. 140. 

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



p. 170. 

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

 V, 1851, p. 331. 



[Fiefers K. uebrascensis and K. occident.ilis to Acerotherium.] 

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

 Pbila. vi, 1852, p. 53. 

 Kneeland, S., jr. [On the rhinoceros' horn.] <^Proc. Boston Soc. Nat. Hist, iv, 1852, p. 175. 

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



vi, 1852, p. 106. 

 Leidy, J. [Remarks on some fossil teeth of rhinoceros — E. amerieanus — from Nebraska.] 



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

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

 1853.— Joly, N., and Lavocat, A. Etudes anatomiques sur uue mule iissipfede aux pieds ant^rieurs. 



<; Comp. Rend. Acad. Sci. Paris, sxxvii, 1853, pp. 337-341. 

 1855.— Joly, N., and Lavocat, A. Note sur le systfeme digital des ^quidds, improprement appelfis mono- 

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

 18."5,p.286. 

 1857.— Skillmau, Dr. [Ou Equus major.] < Proc. Boston Soc. Nat. Hist, vi, 1 857, pp. 303, 304. 

 1858.— Gratiolet, P. Fetus confu 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'enc(Spbale de I'Oreodon gracilis. <Institut, xxvii, 1859, pp. 52, 53. 

 1860. — Leidy, J. [Remarks on fossil teeth of hippotbei iam from Washington County, Texas.] < Proc. 



Aead. Nat. Sci. Pbila. 1860, p. 416. 

 1863. — Riitimeyer, L. Beitruge zur Kenntniss der fossilen Pferde uud zur vcrgleicbenden Odonto- 



grapbic der Unftbiere iiberbaupt. < Verb, natrf. Gesellsch. Basel, iii, 1863, pp. 558-696. 

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



piiblico de Buenos Aires, i, 1864, pp. 32-65, pll. 1-4. 

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



Gill, T. [Communication resjiectiug a new generic type of the family TapiridiB — Elasmogna- 



thus bairdi.] < Proc. Acad. Nat. Sci. Pbila. 1865, p. 183. 

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

 Leidy, J. [Remarks on fcssil rhinoceros.] <[ Proc. Acad. Nat. Sci. Pbila. 18G5, pp. 176, 177. 

 1866.— S-walloTW, G. C. Notice of remains of the horse in the altered drift of Kansas. <[Trans. Acad. 



Sci. St. Louis, ii, lhC6, p. 418. 

 1867. — Arloing, S. Contribution h I'dtude de I'organisation du pied chez le cbeval. <Ann. Sci. Nat. 

 viii, 1867, pp. 55-81, with 2 pll. 

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



pp. 241,891. 

 Flower, 'W. H. Exhibition of the skull of a tapir (Elasmognatbns bairdi. Gill). < Proc. Zool. 



Soc. London, 1867, p. 240. 

 Gill, T. On the genus Elasmoguatbus. < Am. Journ. Sci. and Arts (2), xliii, 1867, p. 370. 

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

 Tapirns, Ifbinoeba'riis, aud Elasmognatbus in ihe colleeliou of the British Museum. <^Proc. 

 Zool. Sjc. London, 1667, pp. 876-886 (with 2 figg.), pi. 42. 



