[1][2] Barygenys atra is a heavy-bodied frog with a comparatively small head, moderately long hind limbs, and pointed nose.

The snout shows only the faintest trace of the three vertical ridges that are prominent in other Barygenys species.

The tympanum is scarcely visible; a weakly developed supratympanic fold is present.

Preserved specimens are dorsally dark purplish brown, with a thin vertebral line.

[3] Barygenys atra occurs in lowland and hill forests at elevations below 700 m (2,300 ft), but its specific habitat requirements are poorly known.