e range of the
more widespread _S. pyrocephalus_.

In Michoacan _Sceloporus gadowae_ has been found along the lower slopes
of the Cordillera Volcanica at elevations from 250 to 1050 meters. All
of the localities from which this lizard is known lie in the arid
tropical scrub forest.

~Sceloporus grammicus microlepidotus~ Wiegmann

_Sceloporus microlepidotus_ Wiegmann, Herpetologia Mexicana,
p. 51, 1834.--Mexico. Type locality restricted to Mexico,
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
Andres (17); Cerro Tancitaro (18); Corupu; Cuseno Station
(2); Jacona; Jerahuaro (10); Macho de Agua; Mil Cumbres; 46
km. E of Morelia; 60 km. E of Morelia (2); Opopeo (14);
Patzcuaro (30); Puerto Hondo (19); San Gregorio (41); San
Jose de la Cumbre (8); Sierra Patamba; Tancitaro (233);
Tupataro; Undameo; Uruapan (180); between Zacapu and Zamora;
24 km. SE of Zitacuaro; 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 Volcanica.
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 Coalcoman.

~Sceloporus heterolepis~ Boulenger

_Sceloporus heterolepis_ Boulenger, Proc. Zool. Soc. London,
1894:731, April, 1895.--La Cumbre de los Arrastrados,
Jalisco, Mexico.

Araparicuaro; Cerro Barolosa (6); Dos Aguas (13); Los
Conejos; 11 km. N of Uruapan (3).

Although Michoacan has not previously been included in the range of this
lizard, it was first collected in the state by Gadow in 1908 (BMNH
1914.1.28.69 from Araparicuaro). The description of _S. heterolepis_
given by Smith (1939:197) can be supplemented by data on the 23
specimens now in the collections of the Museum of Zoology at the
University of Michigan. All have two canthals; there are 55 to 71 (63.6)
scales in the middorsal row; 1 to 3 rows middorsally are somewhat
enlarged and bordered on either side by a row of larger scales bearing
high keels.