A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation Author Wilson, Larry David Author Townsend, Josiah H. text Zootaxa 2007 1395 1 31 journal article 10.5281/zenodo.273681 1414766b-1cb5-4fdb-be42-306fac45815d 1175­5326 273681 1. Geophis anocularis Dunn Geophis anocularis Dunn 1920 : 127 . Catostoma anoculare : Amaral 1929 : 190 . Geophis dubius : Downs 1967 : 84 . Holotype . National Museum of Natural History ( USNM ) 46556, adult male collected 26 July 1894 by E. W. Nelson and E. A. Goldman. Type­locality. Totontepec, Oaxaca, Mexico . Distribution. Known only from 1850­1900 m elevation in the vicinity of the type locality in the Sierra Mije, Oaxaca, Mexico . Species group. dubius ( Downs 1967 ; Campbell et al . 1983 ). Systematic references. Dunn (1920) , Downs (1967) , Campbell et al . (1983) . Remarks. Synonymized with G. dubius by Downs (1967: 84) . Resurrected by Campbell et al . (1983) , based on the collection of 21 additional specimens from Totontepec, Oaxaca, Mexico .