154 BULLETIN 199, UNITED STATES NATIONAL IMUSEUM 



Type locality. — San Jos6 Manteca, 5 kilometers from San Carlos 

 Yautepec, Oaxaca. 



Range. — Known only from the type locality. 



GAIGEIA SYLVATICA (Taylor) 



Lepidophyma sylvatica Taylor, Copeia, 1939, pp. 131-133, figs. 1, 2. 

 Gaigeia sylvatica, Smith, Proc. U. S. Nat. Mus., vol. 92, 1942, p. 380. 



Type.— ERT-HMS No. 16259; E. H. Taylor collector. 

 Type locality. — Seven miles north of Zacualtipan, Hidalgo. 

 Range. — Known only from the type locality. 



GAIGEIA GAIGEAE (Mosauer) 



Lepidophyma gaigeae Mosauer, Herpetologica, vol. 1, 1936, pp. 3-5, pi. 2. 

 Gaigeia gaigeae. Smith, Publ. Field Mus. Nat. Hist., zool. ser., vol. 24, 1939, p. 24. 



Type. — Mus. Comp. Zool. No. 42145; Walter Mosauer collector. 



Type locality. — Durango, Hidalgo. 



Range. — The immediate vicinity of the type locality. 



Genus XANTUSIA Baird 



Xantusia Baird, Proc. Acad. Nat. Sci. Philadelphia, 1858, p. 255. 



Zablepsis Cope, Amer. Nat., vol. 29, 1895, p. 758 (type, XantusiahenshawiStejne- 



ger). 

 Amoebopsis Cope, Amer. Nat., vol. 29, 1895, p. 758 (type, Xantusia gilberti Van 



Denburgh). 



Genotype. — Xantusia vigilis Baird. 



Range. — Southern California, Arizona, southern Utah, Baja Cali- 

 fornia, and adjacent islands. 



Species. — Five, one of which includes two subspecies; three species 

 occur in Mexico. 



KEY TO MEXICAN SPECIES OF XANTUSIA 



1. Ventral plates in 12 series 2 



Ventral plates in 14 series henshawi (p. 155) 



2. A single frontal, eye large vigilis (p. 154) 



A pair of frontals, eye small gilberti (p. 155) 



XANTUSIA VIGILIS Baird 



Xantusia vigilis Baird, Proc. Acad. Nat. Sci. Philadelphia, 1858, p. 255. — Van 

 Denburgh, Occ. Pap. California Acad. Sci., No. 10, 1922, pp. 477-482, pi. 

 49.— Smith, Handbook of lizards, 1946, pp. 330-333, pi. 91. 



Type. — U.S.N.M. No. 3063 (three cotypes); John Xantus collector. 

 Type locality. — "Fort Tejon," California. 



Range. — Southwestern Utah and eastern California southward into 

 northern Baja California as far as San Felipe Bay and San Matias Pass. 



