It has a round snout with an ill-defined pale band that breaks behind the eye.

They may be meagerly stippled with white at the distal half of each dorsal scale, but the ventrum is uniformly dark.

The only exceptions may be some pale stippling on the chin and lateral sides of the ventral scales.

As their namesake suggests, they have a very elongate skull, with strongly developed and smoothly curved parietal crests which merge posteriorly.

Flat-snouted wolf snakes have significantly more posterior maxillary teeth (8 to 9 + 19 to 24) compared to others in Lycophidion (7 to 8 + 11 to 18).