PLESIOMJERY X— PLETHJELURUS. 549 
Plesiomseryx— Continued. 
Extinct. Based on ''quelques piéces, et en particulier, une portion de crane 
avec dents faisant partie de la collection de M. Daudibertiére.”’ 
Plesiomeryx: zÀ96íos, near; neve, raminant—from the posterior molars, which 
indicate relationship with the Ruminants. 
Plesiorycteropus FinHoL, 1895. Effodientia, Orycteropodide. 
Bull. Mus. Hist. Nat., Paris, No. 1, p. 14, Feb., 1895. 
Type: Plesiorycteropus madagascariensis Filhol, from Madagascar. 
Extinct. Based on the posterior part of a skull. 
Plesiorycteropus: mAnoios, near; + Orycteropus. 
Plesiosorex Pome, 1848. Insectivora, Tupaiidz? 
Archiv. Sci. Phys. et Nat., Bibl. Univ. Genéve, IX, 162, Oct., 1848; Cat. Méth. 
Vert. Foss. Bassin de la Loire, 12-13, 1854. 
Type: Plesiosorex talpoides Pomel (— Erinaceus soricinoides Blainville), from the 
Miocene of Cournon, near Chauffours, Auvergne, France. 
Extinct. 
Plesiosorex: zAÀ5610c, near; J-Sorex. 
Plesi[o|spermophilus (see Plesispermophylus). Glires, Sciuridze. 
Plesioxotodon Rornu, 1901. Ungulata, Toxodontia, Toxodontide. 
Revista Mus. La Plata, X, 256, Oct., 1901 (sep. p. 8). 
Type: Plesioxotodon tapalquensis Roth, from the Pampean beds of Argentina. 
Extinct. Based on two upper molars. 
Plesioxotodon: zAÀ56íos, near; + Xotodon. 
Plesiphenacodus Lemoine, 1896. Ungulata, Condylarthra, Phenacodontide. 
Bull. Soc. Géol. de France, 3° sér., XXIV, No. 5, pp. 342, 343-344, pl. xrv figs. 
2-4, June, 1896. 
Type: Plesiphenacodus remensis Lemoine, from the lower Eocene (Faune Cernay- 
sienne), near Reims, France. 
Extinct. *'Représenté par une mandibule droite . . . présentant . . . la deux- 
iéme arriére-molaire bien intacte, les alvéoles de la premiére arriére-molaire 
et de trois prémolaires.”’ 
Plesiphenacodus: zAÀ9610s, near; -|- Phenacodus. 
Plesispermophylus Firnor, 1883. Glires, Sciuridz. 
Bull. Soe. Philomathique, Paris, 7° sér., VII, 99-100, 1883. 
Plesisphermophilus Tuomas, Zool. Record for 1883, XX, Mamm., 36, 1884. 
Plesi[o]spermophilus THomas, Ibid., XX, Index to New Genera, 10, 1884. 
Type: Plesisphermophylus angustidens Filhol, from the Phosphorites of Quercy, 
France. 
Extinet. Based on several jaws. 
Plesispermophilus: zÀ56t0c, near; +-Spermophilus. 
Plesydacrytherium Firnor, 1880. Ungulata, Artiodactyla, Anoplotheriidee. 
Comptes Rendus, Paris, XC, No. 26, p. 1580, Jan.-June, 1880. 
Plesidacrytherium Rocer, Bericht Naturwiss. Ver. Schwaben und Neuburg (a. V.) 
in Augsburg, XXIX, 61, 1887 (emendation ). 
Type: Plesydacrytherium elegans Filhol, from the Phosphorites of Quercy, France. 
Extinct. 
Plesidacrytherium: wAnotios, near; + Dacrytherium—in allusion to the upper teeth, 
which resemble those of Dacrytherium. 
Plethzlurus Corr, 1882. Fere, Felide. 
Proc. Am. Philos. Soc., XX, 475, Nov. 20, 1882; Ann. & Mag. Nat. Hist., 5th 
ser., XII, 116. Aug., 1883. 
