Geophis dugesii Bocourt

Wilson, Larry David & Townsend, Josiah H., 2007, A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation, Zootaxa 1395, pp. 1-31 : 9

15. Geophis dugesii Bocourt

Geophis dugesii Bocourt 1883: 573 .

E (lapoidis) dugesi: Cope 1885: 386 .

Geophis dugesi: Cope 1885: 386 .

Catastoma dugesii: Amaral 1929: 191 .

Geophis aquilonaris Legler 1959: 329 .

Geophis dugesi: Duellman 1961: 96 .

Geophis dugesii aquilonaris: Webb 1977: 551 . Geophis dugesii dugesii: Webb 1977: 551 . Geophis dugesi aquilonaris: Vazquez­Diaz & Quintero­Diaz 1999: 235 .

Holotype. Museum National d’Histoire Naturelle, Paris ( MNHN) 83­278, male collected by O. Navarro and given to A. Dugés.

Type­locality. Tangancicuaro, Mexico.

Distribution. Known from Aguascalientes, Jalisco, Michoacan, Sinaloa, Durango, and Chihuahua, 1500­ 2100 m elevation.

Species group. chalybeus ( Downs 1967) .

Systematic references. Bocourt (1883), Smith (1939), Legler (1959), Downs (1967) Webb (1977), Rodriguez Torres & Vásquez Díaz (1990).

Remarks. Downs (1967: 62­63) tentatively assigned two specimens from southern Sinaloa to Geophis dugesii . Webb (1977: 551) reduced G. aquilonaris to a subspecies of G. dugesii based on a collection of specimens from Durango and Sonora.