es at midbody, a noticeably
lower count than that for _Cnemidophorus lineatissimus lividus_ on the
coast of Michoacan, 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, Michoacan, Mexico.

Barranca de Bejuco (4); Boca de Apiza (2); Coahuayana (6);
El Ticuiz (7); La Placita (11); Maruata (7); Motin del Oro;
Ostula (5); Playa Azul (4); Playa Cuilala (2); Pomaro (2);
Salitre de Estopila (2); San Pedro Naranjestila.

This is the most abundant and widespread species of _Cnemidophorus_ on
the coastal lowlands of Michoacan, where it ranges from sea level to
elevations of about 500 meters. In this area it inhabits dense arid
scrub forest and semi-deciduous broad-leafed forest. Both of these
habitats are continuous, or nearly so, along the lowlands and foothills
of the Sierra de Coalcoman. This in itself may explain the abundance of
_Cnemidophorus lineatissimus_ and the relative scarcity of _C. deppei_
and _C. communis_ in the coastal area, for _C. deppei_ and _C. communis_
usually inhabit more open arid scrub forest, as occurs in the
Tepalcatepec Valley. Living in the dense scrub forest with _C.
lineatissimus_ is _Ameiva undulata sinistra_.

~Cnemidophorus scalaris~ Cope

_Cnemidophorus gularis scalaris_ Cope, Trans. Amer. Philos.
Soc., 17:47, 1892.--Chihuahua, Chihuahua, Mexico.

_Cnemidophorus scalaris_, Zweifel, Bull. American Mus. Nat.
Hist., 117:72, 1959.

Araro (2); Jacona; Lago de Cuitzeo (42); Morelia; 21 km. N
of Morelia (4).

Zweifel (1959a:72) assigned the small species of _Cnemidophorus_ having
a relatively low number of dorsal granules and inhabiting the southern
part of the Mexican Plateau to _C. scalaris_, which he diagnosed as
rarely exceeding 100 mm. in snout-vent length and always having an
average of less than 100 dorsal granules at midbody and usually less
than 90. Forty-two specimens from the south shore of Lago de Cuitzeo
(UMMZ 119558) have 80-91 (85.8) dorsal granules.