The one specimen from Michoacán was collected near the upper limits of the scrub forest on the slopes of the Cordillera Volcánica. Zweifel (1959c:10) stated that in certain aspects of coloration this specimen was like _I. gemmistratus gracillimus_, but in scutellation and other features of coloration it was like _I. g. latistratus_. There are too few specimens of this species to define the ranges of the various subspecies with any degree of accuracy, but from the limited number of specimens available, it seems that _I. gemmistratus gracillimus_ occurs on the Pacific lowlands from Guerrero northward to Colima. Northward on the Pacific lowlands from Colima to Sinaloa and in the Balsas-Tepalcatepec Basin is found _I. gemmistratus latistratus_. ~Lampropeltis doliata~ (Linnaeus) _Coluber doliatus_ Linnaeus, Systema naturae, ed. 12, 1:379, 1766.--Charleston, South Carolina. _Lampropeltis doliata_, Klauber, Copeia, No. 1:11, April 15, 1948. Coalcomán (3); El Sabino; 24 km. W of Morelia; Río Nexpa; Uruapan. The few specimens of this species from Michoacán show a wide range of variation; furthermore, the present systematic status of the subspecies of _Lampropeltis doliata_ portrays an incongruous pattern of distribution. Specimens from the Sierra de Coalcomán have relatively narrow red bands that are not interrupted dorsally by extensions of the black rings; the scales in the red bands have black tips. The specimen from El Sabino (EHT-HMS 5253) and the one from the Río Nexpa on the coast (USNM 31491) have broader red bands; the scales in the red bands do not have black tips. A specimen from 24 kilometers west of Morelia (UIMNH 17782) and one from Uruapan (UMMZ 121508) have the red bands interrupted dorsally by extensions from the black rings. Specimens from the Sierra de Coalcomán were referred to _L. doliata blanchardi_ by Peters (1954:24), who noted that in some characters these snakes were like _L. d. nelsoni_ and in others like _L. d. polyzona_. The individual from El Sabino was referred to _L. d. nelsoni_ by Taylor (1940c:465); the one from 24 kilometers west of Morelia was referred to _L. d. arcifera_ by Smith (1942c:198). If these assignments are correct, three subspecies of _Lampropeltis doliata_ occur in Michoacán: _blanchardi_ in the Sierra de Coalcomán, _nelsoni_ on the coast and in the Tepalcatepec Valley, and _arcifera_ on the Mexican Plateau and in the Cordillera Volcánica. Such a distribution is plausible, but the few specimens and our general lack of knowledge of the variation and relationships of the different populations do not permit a definite assignment at this time. ~Lampropeltis ruthveni~ Blanchard _Lampropeltis ruthveni_ Blanchard, Occ. Pap. Mus. Zool. Univ. Michigan, 81:8, April 28, 1920.--Pátzcuaro, Michoacán, México. Morelia; Pátzcuaro; Tacícuaro.