Geophis bicolor Günther

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 : 5

4. Geophis bicolor Günther

Geophis bicolor Günther 1868: 416 .

Geophis chalybeus: Bocourt 1883: 530 . Dirosema bicolor: Boulenger 1894: 298 . R(habdosoma) bicolor : Cope 1885: 385. Catasoma bicolor: Amaral 1929:191 .

Syntypes. The Natural History Museum, London (BMNH) 1946.1.1.63­66, collected by H. Doorman. Downs (1967: 55) designated BMNH 1946.1.1.64, an adult male, as the lectotype.

Type­locality. “In the neighbourhood of the city of Mexico.”

Distribution. Known from the type locality and three localities in Jalisco, Mexico, from 1800–2600 m elevation.

Species group. chalybeus ( Downs 1967) .

Systematic references. Downs (1967), Dixon (1968), Smith & Flores Villela (1993).

Remarks. Downs (1967: 55) designated BMNH 1946.1.1.64 as the lectotype, as this specimen is the only one of the four syntypes mentioned specifically in the description and was the only adult specimen in a good state of preservation.