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 38. Geophis rostralis (Jan) E(lapoides) rostralis Jan (in Jan & Sordelli) 1865: plate 2, figure 2. Geophis rostralis , Bocourt, 1883 : 533 . R ( habdosoma ) rostrale , Cope 1885 : 385 . Catostoma rostrale , Amaral, 1929 : 192 . Geophis dubius , Downs 1967 : 84 . Holotype . Zoologisches Museum, Berlin ( ZMB ) 6407 ( Downs 1967 ). Type­locality. Unknown. Distribution. Apparently restricted to upper elevations of the Sierra Madre del Sur, Oaxaca, Mexico . Species group. dubius ( Downs 1967 ) . Systematic references. Bocourt (1883) , Webb & Fulger (1957) , Smith (1959) , Bogert & Porter (1966b), Downs (1967) , Smith & Pérez­Higareda (1991) . Remarks. There is disagreement about the specific status of this taxon, which was originally described based on a color plate with no indication of a type specimen or locality. Various authors have recognized G. rostralis as a distinct species (Bogert and Porter 1966; Campbell et al . 1983 ), while others ( Smith 1959 ; Downs 1967 ; Pérez­Higareda & Smith 1988; Smith & Pérez­Higareda; 1991 ) maintain that this species is conspecific with G. dubius .