Genus Adelophis

Cope's Mountain Meadow Snake - The snake dwells in the wetlands of west-central Mexico, in such areas as Jalisco, Michoacan, Guanajuato, Hidalgo, and northern Morelos.

Fox's Mountain Meadow Snake - The last known specimen was seen since since the 1970s in southwestern Durango, Mexico, at "4km east of the locality Mil Diez, approximately 3.