Elaps Martii Wagler 1824. Type locality: Provincia Maranhao, Rio Itapicuru, Brazil
Hydrops Martii — Wagler 1830: 170
Homalopsis Martii — Schlegel 1837: 356
Hydrops callostictus Günther 1868: 421
Calopisma martii — Jan and Sordelli 1868
Hydrops triangularis martii — Amaral 1930
Hydrops martii — Dowling 2002
Distribution: Distribution: Amazon basin from Colombia and eastern Peru to Maranhao, Brazil. Known from tributaries of Rio Amazonas, the Rio Ucayali and Rio Marañon, Peru. Roze (1957) reported a specimen from Rio Cairary, near Jurupary waterfall, on the boundary between Colombia and Brazil. Type locality: Provincia Maranhao, Rio Itapicuru, Brazil.