_Conophis pulcher_ Cope, Proc. Acad. Nat. Sci. Philadelphia, 20(5):308, 1869; Journ. Acad. Nat. Sci. Philadelphia, ser. 2, 8:137, 1876; Bocourt _in_ Duméril, Bocourt and Mocquard, Mission Scientifique au Mexique et dans l'Amerique Centrale, 2:646-648, pl. 38, fig. 6, 1886; Ferrai-Perez, Proc. U. S. Natl. Mus., p. 196, September 28, 1886; Cope, Bull. U. S. Natl. Mus., 32:77, 1887; Trans. Amer. Philos. Soc., 18:194, April 15, 1895; Ann. Rept. U. S. Natl. Mus. for 1898, p. 1095, 1900; Alvarez del Toro, Reptiles de Chiapas, pp. 154-155, 1960. _Tomodon pulcher_, Bocourt, Journ. de Zool., p. 408, 1876. _Conophis pulcher_ var. _similis_ Bocourt _in_ Duméril, Bocourt and Mocquard, Mission Scientifique au Mexique et dans l'Amerique Centrale, 2:647-648, pl. 38, fig. 6, 1886 [Type.--Museum National d'Histoire Naturelle, Paris, no. 6090; type locality.--unknown, restricted to Tonalá, Chiapas, by Smith and Taylor (1950:326)]. _Conophis lineatus_, Günther, Biologia Centrali-Americana, p. 165, March, 1895; Boulenger, Catalogue of the Snakes in the British Museum (Natural History), 3:122-123, 1896; Stuart, Occas. Papers Mus. Zool. Univ. Michigan, 292:5, June 29, 1934; Slevin, Proc. California Acad. Sci. 4th Ser., 23:409, December 29, 1939. _Conophis pulcher pulcher_, Smith, Journ. Washington Acad. Sci., 31:121, March 15, 1941; Proc. U. S. Natl. Mus., 92:395, November 5, 1942; Stuart, Contr. Lab. Vert. Biol. Univ. Michigan, 65:19-20 (part), March, 1954; Contr. Lab. Vert. Biol. Univ. Michigan, 68:63, November, 1954; Cochran, Bull. U. S. Natl. Mus., 220:167, 1961. _Conophis pulcher plagosus_ Smith, Journ. Washington Acad. Sci. 31:121-122, March 15, 1941 (Type.--United States National Museum, no. 109707; type locality: Tonalá, Chiapas); Smith and Taylor, Univ. Kansas Sci. Bull., 33(pt. 2):326, March 20, 1950; Stuart, Contr. Lab. Vert. Biol. Univ. Michigan, 65:19-20, March, 1954; Cochran, Bull. U. S. Natl. Mus., 220:167, 1961. _Conophis pulcher similis_, Smith, Proc. U. S. Natl. Mus., 92:395, November 5, 1942; Proc. U. S. Natl. Mus., 93:408, October 29, 1943; Smith and Taylor, Bull. U. S. Natl. Mus., 187:43-44, October 5, 1945; Univ. Kansas Sci. Bull., 33(pt. 2):43-44, March 20, 1950; Maldonado-Koerdell, Inst. Mexicanos Recursos Nat. Renov. pp. 132-133, 1953.