PLATISCHISTA —PLATY CRANIUS. 548 
Platischista (see Platyschista). Ferze, Viverridze. 
Platoceras (subg.of Tinoceras) MARsH, 1886. Ungulata, Ambly poda, Uintatheriidee. 
Mon. U. 8. Geol. Surv., X, Dinocerata, App., p. 214, figs. 180, 181, 189, 190, 1886. 
Species: Tinoceras latum. Marsh, from the Eocene (Bridger) near Spanish John 
Meadow, in the vicinity of Green River; and Eobasileus cornutus Cope, from 
the Eocene of Haystack Mountain, near the headwaters of Bitter Creek, Sweet- 
water County, both from southwestern Wyoming. 
(xtinct. 
Platoceras: tAarvs, broad; Képas, horn—in allusion to the large flattened max- 
illary protuberances. 
Platuprosopos Fiuuor, 1888. Ungulata, Artiodactyla, Cervidze. 
Bull. Soc. Philomathique, Paris, 7° sér., XII, No. 1, pp. 30-32, 1888. 
Platyprosopos LypEKKER, Zool. Record for 1888, XXV, Mamm., 52, 1890. 
Type: Platuprosopos sansaniensis Filhol, from Sansan, Dépt du Gers, France. 
Name preoccupied by Platyprosopus Mannerheim, 1830, a genus of Coleoptera. 
Replaced by Strogulognathus Filhol, 1890. 
Extinct. Based on a lower jaw. 
' Platuprosopos: wAarts, broad; zpóGcov, face. 
Platyacanthomus, Platyacanthomys (see Platacanthomys). 
Glires, Muscardinid:e. 
Platycercomys Branpr, 1844. Glires, Dipodid:e. 
Bull. Cl. Phys.-Math. Acad. Imp. Sci., St.-Pétersbourg, II, Nos. 14-15, pp. 225- 
228, 230, Jan. 20, 1844. 
Type: Dipus platyurus Lichtenstein, from the mouth of the Kuwan-Darja, Aral 
Sea, south western Siberia. 
Name antedated by Pygeretmus Gloger, 1841. 
Platycercomys: zÀAarvs, broad, flat; KépKos, tail; 0s, mouse. 
Platyceros Gray, 1850. Ungulata, Artiodactyla, Cervide. 
Proc. Zool. Soc. London, 1850, 228-229; Knowsley Menagerie, 1850, 60-61. 
The name may be only a descriptive term and not used asa genus. Platyceros 
equals Dama H. Smith, but does not replace it in the text, Dama vulgaris, from 
Persia, being given as the only species. 
Name preoccupied by Platyceras Conrad, 1837, a genus of Mollusca. 
Platyceros: tAarvs, broad, flat; Kéeas, horn—from the fact that the upper parts 
of the horns are expanded or palmated. 
Platyceros (subg. of Cataglochis) Pomen, 1854. Ungulata, Cervide. 
Cat. Méth. Vert. Foss. Bassin de la Loire, 103, 1854. 
Species: Cervus somonensis G. Cuvier, from Gergovia; and C. roberti Pomel (=C. 
dama polignacus Robert ),from Polignac, near Puy, France. (See Platyceros Gray). 
Extinct. 
Platycherops CHARLEsworTH, 1855. Tillodontia, Esthonychide. 
Rept. Brit. Ass. Adv. Sci., for 1854, Notes & Abstracts, p. 80, 1855. 
Type: Platychxrops richardsonii Charlesworth, from the London Clay of Herne 
Bay, near the mouth of the Thames, England. 
Extinct. Based ona ‘skull . . . about the size of the Hyracotherium.’ 
Platychxrops: zÀAarÜs, broad, flat; yotpos, pig; Ow, aspect. 
Platycranius (subg. of Microtus) KAsrscHENKO, 1901. Glires, Murid:e, Microtine. 
Ann. Mus. Zool. Acad. Imp. Sci. St.-Pétersbourg, VI, Nos. 2-3, pp. 199-206, 
figs. 2-3, 1901. 
Species: Microtus strelzowi Kastschenko, and Mus alliarius Pallas, from Siberia. 
Name preoccupied by Platycrana Gray, 1836, a genus of Orthoptera; by Platy- 
erania Burmeister, 1838, a genus of Orthoptera; and by Platycranion Jan. 
1863, a genus of Ophidia. 
Platycranius: zÀAarvs, broad, flat; «pavíov, skull. 
