Eunectes notaeus Cope, 1862

Type locality. “South America.” Restricted to 50 km south of Forte Coimbra, on the Paraguay River, near the border between Brazil, Bolivia and Paraguay (Dirksen, 2002) .

Distribution. Known from Argentina, Bolivia, Brazil, Paraguay, and Uruguay (Plt. 49A) along the Paraguay River depression. In Brazil, recorded in the Pantanal, Cerrado, Atlantic Forest, and Pampas Grasslands (Plt. 49A), at low elevations (Plt. 49B). Observed in the field in wet and riparian habitats including rivers, swamps, flooded grassland, lakes, and lagoons (Waller, 1988; Strüssmann and Sazima, 1993; Giraudo and Scrocchi, 2002; Sousa et al., 2010).