Conophis vittatus vittatus, Smith, Jour. Washington Acad. Sci., 31:119, March 17, 1941.
Arteaga; Coalcomán (4); La Playa; 19 km. S of Tzitzio.
All specimens of this terrestrial snake have been collected in areas of scrub forest between 800 and 1100 meters above sea level. Since the species is known from the coastal regions of Guerrero and Colima, its absence from the cost of Michoacán is unexplainable; probably the lack of specimens from these areas is due solely to inadequate collecting.
Conopsis biserialis Taylor and Smith
Conopsis biserialis Taylor and Smith, Univ. Kansas Sci. Bull., 28 (2):333, November 12, 1942.—Ten miles west of Villa Victoria, México, México.
Capácuaro (5); Cerro San Andrés; Cherán; Ciudad Hidalgo; Macho de Agua (4): Pátzcuaro (8); Tancítaro (24); Uruapan (9); 24 km. SE of Zitácuaro (14).
This species is abundant in the coniferous forests at elevations from 1550 to 2800 meters throughout the Cordillera Volcánica; apparently it does not occur in the Sierra de Coalcomán.
On August 1, 1956, a copulating pair was found beneath a rock at Capácuaro.
One of the best characters to distinguish this species from Toluca lineata, which occurs with Conopsis throughout its range in Michoacán, is the presence of large, black ventral blotches in Conopsis biserialis, as contrasted with the two rows of small black spots in Toluca lineata.
Conopsis nasus Günther