Dixon's Ground Snake

The holotype, a male, measures 505 mm (19.9 in) in total length, which includes 108 mm (4.3 in) tail. Female topotypes had relatively shorter tails. The belly is black, as indicated by its specific name (from Latin atra (=black) and venter (=belly)). Later studies indicate a maximum length of 800 mm (31 in).

E. atraventer occurs in the upland areas of the Atlantic Forest, forest edges, in wet areas, and in both forested and open areas. It is terrestrial and diurnal.