Tropidonophis

Tropidonophis is a genus of snakes in the subfamily Natricinae of the family Colubridae.

Species
The following 20 species are recognized as being valid.
 * Tropidonophis aenigmaticus Malnate & Garth Underwood, 1988 – East Papuan keelback,
 * Tropidonophis dahlii (F. Werner, 1899) – New Britain keelback
 * Tropidonophis dendrophiops (Günther, 1883) – spotted water snake
 * Tropidonophis dolasii Edward Frederick Kraus & Allen Allison, 2004
 * Tropidonophis doriae (Boulenger, 1897) – barred keelback
 * Tropidonophis elongatus (Jan, 1865) – Moluccan keelback
 * Tropidonophis halmahericus (Boettger, 1895)
 * Tropidonophis hypomelas (Günther, 1877) – Bismarck keelback
 * Tropidonophis mairii (Gray, 1841) – common keelback, Mair's keelback
 * Tropidonophis mcdowelli Malnate & Underwood, 1988 – Northern New Guinea keelback
 * Tropidonophis montanus (Lidth de Jeude, 1911) – North Irian montane keelback
 * Tropidonophis multiscutellatus (Brongersma, 1948) – many-scaled keelback
 * Tropidonophis negrosensis (Taylor, 1917) – Negros spotted water snake
 * Tropidonophis novaeguineae (Lidth De Jeude, 1911) – New Guinea keelback
 * Tropidonophis parkeri Malnate & Underwood, 1988 – Parker's keelback, highland keelback
 * Tropidonophis picturatus (Schlegel, 1837) – painted keelback
 * Tropidonophis punctiventris (Boettger, 1895) – Halmahera keelback
 * Tropidonophis spilogaster (Boie, 1827) – Boie's keelback
 * Tropidonophis statisticus Malnate & Underwood, 1988 – Papua New Guinea montane keelback
 * Tropidonophis truncatus (W. Peters, 1863)

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