The Amphibians and Reptiles of Michoacán, México

by William Edward Duellman

Thamnophis scalaris scaliger (Jan)

Tropidonotus scaliger Jan, Elenco sistematico degli Ofidi, p. 70, 1863.—No type locality designated. Type locality restricted to Mexico City, Distrito Federal, by Smith and Taylor (1950a:329).

Thamnophis scalaris scaliger, Smith, Zoologica, 27:103, October 23, 1942.

Cerro Tancítaro (2); Nahuatzen; Opopeo; 26 km. S of Pátzcuaro.

The few specimens of this species from Michoacán have been collected at elevations from 1800 to 3400 meters in pine or fir forest in the Cordillera Volcánica.

Micrurus distans michoacanensis (Dugès)

Elaps diastema michoacanensis Dugès, La Naturaleza, ser. 2, 1:487, 1891.—Michoacán. Type locality restricted to Apatzingán, Michoacán, México, by Smith and Taylor (1950a:335).

Micrurus distans michoacanensis, Zweifel, Amer. Mus. Novitates, 1953:11, June 26, 1959.

Apatzingán (6).

All specimens were collected in the arid scrub forest of the Tepalcatepec Valley. The number of black rings on the body varies from six to eleven. In this respect they agree with the diagnosis of this subspecies presented by Zweifel (1959b:9).