As in _Cnemidophorus calidipes_, the distribution of this subspecies seems to be restricted to the Tepalcatepec Valley, except in the vicinity of Arteaga, where it occurs on the southern slope of the Sierra de Coalcomán. As pointed out by Duellman and Wellman (1960:46), the specimens from south of Arteaga are like those from the Tepalcatepec Valley in scutellation and coloration, and not like _Cnemidophorus lineatissimus lividus_ from the geographically closer coastal lowlands. In the Tepalcatepec Valley _Cnemidophorus lineatissimus exoristus_ inhabits gallery forests along the larger streams; in this habitat it is associated with _Ameiva undulata sinistra_. From the other species of _Cnemidophorus_ in Michoacán, _C. lineatissimus exoristus_ can be distinguished by the possession of seven longitudinal stripes in adults and by the characters of scutellation given in Table 5. ~Cnemidophorus lineatissimus lineatissimus~ Cope _Cnemidophorus lineatissimus_ Cope, Proc. Amer. Philos. Soc., 17:94, 1877.--Colima and Guadalajara. Type locality restricted to Colima, Colima, México, by Smith and Taylor (1950b:179). _Cnemidophorus lineatissimus lineatissimus_, Duellman and Wellman, Misc. Publ. Mus. Zool. Univ. Michigan, 111:41, February 10, 1960. Boca de Apiza (4). These specimens have 117 to 126 dorsal granules at midbody, a noticeably lower count than that for _Cnemidophorus lineatissimus lividus_ on the coast of Michoacán, which has 126 to 164 (148). Apparently these specimens represent immature _C. lineatissimus lineatissimus_; the differences between these and _C. lineatissimus lividus_ from nearby localities indicate that possibly the populations are distinct species and not subspecies, as suggested by Duellman and Wellman (1960:41). ~Cnemidophorus lineatissimus lividus~ Duellman and Wellman _Cnemidophorus lineatissimus lividus_ Duellman and Wellman, Misc. Publ. Mus. Zool. Univ. Michigan, 111:50, February 10, 1960.--Maruata, Michoacán, México. Barranca de Bejuco (4); Boca de Apiza (2); Coahuayana (6); El Ticuiz (7); La Placita (11); Maruata (7); Motín del Oro; Ostula (5); Playa Azul (4); Playa Cuilala (2); Pómaro (2); Salitre de Estopila (2); San Pedro Naranjestila.