Psomophis

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Dipsadidae
Subfamilia: Xenodontinae
Genus: Psomophis
Species: P. genimaculatus – P. joberti – P. obtusus
Name

Psomophis

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.[1]

Psomophis genimaculatus (Boettger, 1885)
Psomophis joberti (Sauvage, 1884)
Psomophis obtusus (Cope, 1864)

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Psomophis.
References

Genus Psomophis at The Reptile Database. www.reptile-database.org.

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).