A small species of frog, reaching up to 3 cm in body length. It has a black and green marbled back, with a triangular green patch on the head. The belly was lead-coloured and the toes were slightly webbed. This information is from when the frog was first described in 1841 and is all that is known of the species, which has never been recorded since.
Eggs, tadpoles, and development time are unknown. Breeding season is unknown.
Looks very similar to Uperoleia mjobergii, but has a different distribution and lacks a small metatarsal tubercle on the heel. There is not enough description information available to compare this frog with any other species.
Found near the Prince Regent River, in the Kimberley region in WA. It is known only from one individual, on which the description of the species is based.