Home - Taxonomy - Geography - Biodiversity - Literature - Purchase RepFocus Recent updates Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk). Latest update: December 31st, 2022. Taxonomy of the family Homalopsidae Bibliography of the genus Heurnia Biodiversity of the family Homalopsidae Genus Heurnia Mamberamo River Water Snake Mamberamo-Schlammnatter Mamberamo-muddersnog 1926 Heurnia De Jong (type species: Heurnia ventromaculata Jong 1926) Contents: 1 species, which is endemic. Endemism: 0% 100% Distribution: As for the single species. Heurnia ventromaculata Mamberamo River Water Snake, Mamberamo Mud Snake Mamberamo-Schlammnatter Mamberamo-muddersnog 1926 Heurnia ventromaculata Jong Distribution: Indonesia (Western New Guinea).