Psomophis is a genus of snakes in the family Colubridae. The genus is endemic to South America.
Species The genus Psomophis contains three species which are recognized as being valid.. www.reptile-database.org. Psomophis genimaculatus – spirit diminutive snake, spirit ground snake, cobra-cabelo Psomophis joberti – Jobert's ground snake, cobra-corredeira Psomophis obtusus – wide ground snake, corredeira-do-banhado
Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Psomophis.
References
Further reading Myers, Charles W.; Cadle, John E. (1994). "A New Genus for South American Snakes Related to Rhadinaea obtusa Cope (Colubridae) and Resurrection of Taeniophallus Cope for the “Rhadinaea” brevirostris Group". American Museum Novitates (3102): 1-33. (Psomophis, new genus, p. 6).