_Sceloporus microlepidotus_ Wiegmann, Herpetologia Mexicana, p. 51, 1834.--México. Type locality restricted to México, Distrito Federal, by Smith and Taylor (1950b:120). _Sceloporus grammicus microlepidotus_, Smith and Laufe, Trans. Kansas Acad. Sci., 48:332, December, 1945. Angahuari; Apo (10); Atzimba (3); Carapan (5); Cerro San Andrés (17); Cerro Tancítaro (18); Corupu; Cuseño Station (2); Jacona; Jeráhuaro (10); Macho de Agua; Mil Cumbres; 46 km. E of Morelia; 60 km. E of Morelia (2); Opopeo (14); Pátzcuaro (30); Puerto Hondo (19); San Gregorio (41); San José de la Cumbre (8); Sierra Patamba; Tancítaro (233); Tupátaro; Undameo; Uruapan (180); between Zacapu and Zamora; 24 km. SE of Zitácuaro; between Zurumbeneo and Cerro Garnica. This small species of _Sceloporus_ is an ubiquitous inhabitant of the coniferous forests from 1550 to 3100 meters in the Cordillera Volcánica. Usually it is seen on tree trunks, but occasionally on the ground. Near the lower limit of the altitudinal distribution of the species, as at Uruapan, individuals sometimes are found on broad-leafed trees. Apparently _Sceloporus heterolepis_ replaces _S. grammicus microlepidotus_ in the Sierra de Coalcomán. ~Sceloporus heterolepis~ Boulenger _Sceloporus heterolepis_ Boulenger, Proc. Zool. Soc. London, 1894:731, April, 1895.--La Cumbre de los Arrastrados, Jalisco, México. Araparicuaro; Cerro Barolosa (6); Dos Aguas (13); Los Conejos; 11 km. N of Uruapan (3).