546 INDEX GENERUM MAMMALIUM. 
Platyrrhinus— Continued. 
Name preoccupied by Platyrhinus Clairville, a genus of Coleoptera. 
Platyrrhinus: mAartvppis, rAarvppiros, broad-nosed (from zAarvs broad; pis 
fiv óc, nose). 
Platyschista (subgenus of Viverra) Orro, 1885. Fere, Viverride. 
Nova Acta Acad. Css. Leop.-Carol., XVII, pt. 1r, 1102, pls. txxrr-nxxrrr, 1835; 
Gray, Proc. Zool. Soc. London, 1864, 531-536, 2 figs. in text. 
Platischista 'TRovEssART, Cat. Mamm., new ed., fasc. 11, 329, 1897 (misprint). 
Type: Viverra hermaphrodita Pallas, from India. 
Platyschista: tAatvs, broad; Gy:6rós, divided. 
Platystomus G. FiscuEgn, 1808. Sirenia, Dugongidee. 
Das Nationalmuseum Naturgesch. zu Paris, II, 353, 1803; Zoognosia, I, 3d ed., 
15, 19, 1813. 
Type: Platystomus dugong (— Trichecus dugon Müller), from the Indian Ocean. 
This name may be preoccupied by Platystoma Meigen, 1803, a genus of Diptera. 
Platystomus: tA at vor ojos, broad-mouthed (from zAatvs, broad; 6róuo, mouth. ) 
Platythrix Picrer, 1842. Glires, Octodontide. 
Verhandl. Schweiz. Naturf. Gesellsch., X XVII, 192, 1842; WAGNER, Wiegmann’s 
Archiv Naturgesch., 1844, Bd. 2, 172. 
Type (species not mentioned), from Bahia, Brazil. ‘ Voisin des Echimys.’ 
Platythrix: zÀAarvs, broad; $7, hair. 
Plaxhaplous AmMEGHINO, 1884. Edentata, Glyptodontide. 
Bol. Acad. Nac. Cien. Cordoba, VI, entr. 2-3, pp. 199-200, 1884; Cont. Conoci- 
miento Mamíf. Fósil. Repüb. Argentina, in Act. Acad. Nac. Cien., Córdoba, 
VI, 849-851, pls. Lvi figs. 3-4, Lxxxvu, 1889. 
Type: Plaxhaplous canaliculatus Ameghino, from El Paso de la Virgen, near Lujan, 
Province of Buenos Aires, Argentina. 
Extinet. Based on scutes from various parts of the carapace. 
Plaxhaplous: 7A dé, flat surface; &zAóos, simple. 
Plecotus Grorrroy, 1813. Chiroptera, Vespertilionide. 
Desc. l’ Egypte, II, 112, 118-119, pl. 2, No. 3, 1813; Oxren, Lehrb. Naturgesch., 
3ter Theil, Zool., 2te Abth., 928-950, 1816. 
Plecautus F. Cuvier, Dict. Sci. Nat., LIX, 415, 1829 (misprint). 
Species: ‘‘ Les trois espéces de ce genre sont, l'oreillard de Daubenton, la barba- 
stelle, et une nouvelle espéce de Timor." (GEOFFROY. ) 
Plecotus: tlékoo, to twine, to twist; ovs @rds, ear. 
Plectodon GiGriorr, 1873. Marsupialia, ? 
Ricerche Intorno Dist. Geog. Gen., 233, 1873. 
Plectodon occurs only in a list of the Quaternary genera of Marsupials of Australia, 
between Thylacoleo and Diprotodon. It is not accompanied by authority or 
reference to place of publication, and may be a misprint for some other name. 
Extinct. 
Plectodon: zx Àekrós, plaited, twisted; 65@v=6d6do0vs, tooth. 
Plectrochcrus PicrET, 1843. Glires, Erethizontidee. 
Revue Zool., VI, 225-227, Aug., 1843. 
Type: Plectrocherus moricandi Pictet, from Bahia, Brazil. 
Plectrocherus: TÀAfirpor, spine, spur; yozpos, hog—'spiny hog,’ from the spines 
which cover the body. (Compare the English word porcupine). 
Pleopus Owzw, 1877. Marsupialia, Macropodid:e. 
Ann. & Mag. Nat. Hist., 4th ser., XX, 542, Dec., 1877; THomas, Cat. Marsup. & 
Monotrem, Brit. Mus., 123, 1888 (in synonymy), 
