526 INDEX GENERUM MAMMALIUM. 
Pestypotherium ll ^rEckzEL, 1895. Ungulata, ? 
Syst. Phylogenie Wirbelthiere, III, 502, 1895. 
Hypothetical genus supposed to occur in the Miocene of South America. 
Pestypotherium: Lat. pes, foot; + Typotherium. 
Petalia (subgenus of Nycteris) Gray, 1888. Chiroptera, Megadermatide. 
Mag. Zool. & Bot., II, No. 12, p. 494, 1838. 
Pelatia Gray, Proc. Zool. Soc. London, 1866, 83 (misprint). 
Type: Nycteris javanica Geoffroy, from Java. 
Petaurista Linx, 1795. Glires, Sciuridee. 
Beytrüige zur Naturgesch., I, pt. ir 52, 78, 1795; Tuomas, Proc. Zool. Soc. 
London, 1896, 1015 (type fixed). 
Petauristus Fiscuer, Zoognosia, III, 498-505, 1814. 
Species, 5: Petaurista volucella Link (=Sciurus volucella Pallas), from North 
America; P. volans (— S. volans Linneeus), from Eurasia; P. hudsonia (= S. 
hudsonicus Erxleben), from Hudson Strait; P. taguan ( — S. petaurista Gmelin, 
type), from the East Indies; and P. sagitta ( — S. sagitta Linnzeus), from Java. 
Petaurista: zt £ravpti6r?)s, a rope-dancer. 
Petaurista DrgswAnEsT, 1820. Marsupialia, Phalangerid:e. 
[ RAFINESQUE, Analyse de la Nature, 55, 1815—nomen nudum.] 
Dersmarest, Mammalogie, I, 268-271, 1820; Tuomas, Cat. Marsup. & Monotrem. 
Brit. Mus., 163-166, 1888 (under Petauroides, type fixed). 
Species, 6: Petaurus taguanoides Desmarest (= Didelphis volans Kerr, type), 
Didelphis macroura Shaw, Petaurus jflaviventer Desmarest, Didelphis sciurea 
Shaw, Petaurus peronii Desmarest, and Didelphis pygma Shaw, from Australia. 
(D. pygmexa is placed in the subgenus Acrobata; the others appear in the sub- 
genus ' Pétauristes proprement dits. ) 
Name preoccupied by JPetaurista Link, 1795, a genus of Glires. Replaced by 
Petauroides Thomas, 1888. 
Petaurista (subg. of Cercopithecus) REICHENBACH, 1862. Primates, Cercopithecide. 
Vollstiind. Naturgesch. Affen, 105-107, pl. xvrir figs. 251—261, 1862. 
Species, 7: Cercopithecus cephus Gmelin, C. melanogenys Gray, C. ludio Gray, 
C. petaurista (Schreber, type), C. histrio Reichenow, C. ascanius ( Audebert), 
and C. nictitans (Gmelin), from West Africa. 
Name preoccupied by Petaurista Link, 1795, a genus of Glires, and by Petaurista 
Desmarest, 1820, a genus of Marsupialia. ‘‘Der Name wurde durch Cuvier 
und Desmarest der schon bestehenden Gattung Petaurus Shaw gegeben und ist 
also vacant!" (REICHENBACH. ) 
Petauroides Thomas, 1888. Marsupialia, Phalangeridze. 
Cat. Marsup. & Monotrem. Brit. Mus., 163-166, Nov. 3, 1888. 
New name for Voluccella Bechstein, 1800, which is preoccupied by Volucella 
Geoffroy, 1764, and Voluccella Fabricius, 1794, a genus of Diptera; and for 
Petaurista Desmarest, 1820, which is preoccupied by Petaurista Link, 1795, a 
genus of Glires. 
Petauroides: Petaurus; &180c, form. 
Petaurus SHaw, 1791. Marsupialia, Phalangeride. 
Naturalist’s Miscellany, II [Dd., pp. 1-4], pl. 60, Mar. 1, 1791; THomas, Cat. 
Marsup. & Monotrem. Brit. Mus., 150-159, 1888. 
Type: Petaurus australis Shaw, from New South Wales, or Victoria. 
Petaurus: métavpor, springboard, spring. 
Petrobates IlEvGLIN, 1860. Glires, Octodontide. 
Zeitschr. Gesammt. Naturwiss., Berlin, XVI, Nos. x-xr, 413, Oct.-Nov., 1860 
(abstr. of following article:); Petermann's Geog. Mittheil., I, 15, 17-18, 1861; 
Heuglin & Fitzinger, Sitzungsber. Math.-Nat. Cl. K. Akad. Wiss., Wien, LIV, 
Iste Abth., 576, 1866. 
