POSTPITHECUS—POTAMOTHERIUM. 559 
Postpithecus—Continued. 
Extinct. 
Postpithecus: Lat. post, behind; + Pithecus. 
Potamarchus BurmerstEer, 1885. Glires, Chinchillide. 
Anal. Mus. Nac., Buenos Aires (III), entr. xiv, 154-157, pl. 11 fig. 4, 1885. 
Type: Potamarchus murinus Burmeister, from the Tertiary of Paraná, Argentina. 
Extinct. Based on ‘la porción media del lado derecho del maxilar, con las 
cuatro muelas.’ 
Potamarchus: zorapuós, river; &pxos, leader, chief. 
Potamocherus Gray, 1854. Ungulata, Artiodactyla, Suide. 
Proc. Zool. Soc. London, for 1852, No. ccoxrvr, 129-132, pl. xxxiv, June 27, 1854; 
Ann. & Mag. Nat. Hist., 2d ser., XV, 65-66, 1855; 4th ser., XI, 434, 1873; 
W. L. ScLATER, Mamm. 8. Africa, I, 273-276, fig. 69, 1900. 
New name for Choiropotamus Gray, 1843, which is preoccupied by Cheropotamus 
Cuvier, 1822, a different genus of Suid:. Species: Sus africanus Gmelin 
(type, — S. kotropotamus Desmoulins, 1831), and S. penicillatus Schinz, from 
Africa. 
Potamocherus: zorajtós, river; Yotpos, hog—from its habitat. 
Potamogale Du CnairLv, 1860. Insectivora, Potamogalidze. 
Proc. Boston Soc. Nat. Hist., VII, 361-363, Nov., 1860. 
Type: Cynogale velox Du Chaillu, from western equatorial Africa. 
Potamogale: zoranuós, river; yadn, weasel. 
Potamohippos JicEn, 1835. Ungulata, Artiodactyla, ? 
Foss. Sàugeth. Würtemberg, 1ste Abtheil., 41—42, 43, Tab. tv, fig. 76, 1835; 2te 
Abtheil., 201, 206, 1839. 
Type (species not mentioned), from the ‘Bohnerzgruben’ of Württemberg, 
Germany. 
Extinct. 
Potamohippos: zoranuós, river; ?z706, horse. 
Potamophilus 8. Miter, 1838-39. Fere, Viverride. 
Van der Hoeven's Tijdsehr. Natuurl. Geschied. Physiologie, V, 140-144, 
1838-39; Temminck's Verhandl., 115, pl. xvrr, 1839-44. 
Type: Potamophilus barbatus Müller, from Borneo. 
Name preoccupied by Potamophilus Germar, 1811, a genus of Coleoptera. 
Replaced by Hydrotidasson Gistel, 1848. 
Potamophilus: moray.os, river; @tAos, loving. 
Potamotherium É. Grorrroy, 1833. Fere, Mustelide. 
Revue Encyclopédique, LIX, 80-81, 1833; Etudes Progressives d'un Naturaliste, 
91-92 footnote, 1835. 
Pomalotherium Hay, Cat. Foss. Vert. N. Am., Bull. 179, U. S. Geol. Surv., 768, 
1902 (misprint). 
Type: Lutra valetoni Geottroy, from the quarries of Saint-Gérand-le-Puy, Dépt. 
Allier, France. 
Extinct. Based on two extremities of the skull, an entire lower jaw, and some 
bones of the shoulder and limbs. 
Potamotherium: morass, river; 0npíov, wild beast. I 
Potamotherium Grocrn, 1841. Ungulata, Artiodactyla, Hippopotamid:e. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxii, 127, 1841; Tomas, Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, Feb. 1, 1895. 
Type: Hippopotamus sivalensis Falconer & Cautley, from the Pliocene of the 
Siwalik Hills, India. 
Name preoccupied by Potamotherium Geoffroy, 1833, a genus of Mustelid:e, 
Extinct, 
