All of the species are small land frogs, about 4 centimetres (1.6 in) in length. They hide under fallen leaves or in rock crevices. They lay their eggs on moist ground, rather than in water. One species lacks tadpoles, with the eggs hatching directly into froglets. The others carry the tadpoles on their back until metamorphosis.
The family was first described in 1931 by Gladwyn Kingsley Noble (1894–1940).