Helicops (generoa)
Helicops Dipsadidae familiako narrasti genero bat da. Hego Amerikan bizi dira.

Espezieak 
 Helicops angulatus (Linnaeus, 1758)
 Helicops apiaka Kawashita-Ribeiro, Ávila & Morais, 2013
 Helicops carinicaudus (Wied-Neuwied, 1825)
 Helicops danieli Amaral, 1938
 Helicops gomesi Amaral, 1921
 Helicops hagmanni Roux, 1910
 Helicops infrataeniatus Jan, 1865
 Helicops leopardinus (Schlegel, 1837)
 Helicops modestus Günther, 1861
 Helicops pastazae Shreve, 1934
 Helicops petersi Rossman, 1976
 Helicops polylepis Günther, 1861
 Helicops scalaris Jan, 1865
 Helicops tapajonicus Da Frota, 2005
 Helicops trivittatus (Gray, 1849)
 Helicops yacu Rossman & Dixon, 1975

Kanpo estekak 

Dipsadidae
Helicops Dipsadidae familiako narrasti genero bat da . Hego Amerikan bizi dira . Espezieak Helicops angulatus ( Linnaeus , Helicops apiaka Kawashita-Ribeiro , Ávila & Morais , Helicops carinicaudus ( Wied-Neuwied , Helicops danieli Amaral , Helicops gomesi Amaral , Helicops hagmanni Roux , Helicops infrataeniatus Jan , Helicops leopardinus ( Schlegel , Helicops modestus Günther , Helicops pastazae Shreve , Helicops petersi Rossman , Helicops polylepis Günther , Helicops scalaris Jan , Helicops tapajonicus Da Frota , Helicops trivittatus ( Gray , Helicops yacu Rossman & Dixon , Kanpo estekak Dipsadidae