I. Pupil vertical.
A. With vomerine teeth.
a. Omosternum very slender and cartilaginous. Small discs. India and Ceylon, 3 species .......... Nannobatrachus.
b. Omosternum with a bony style.
α. Outer metatarsals webbed. Small discs. South India, 2 species .......... Nyctibatrachus.
β. Outer metatarsals close together. Africa.
Fingers and toes with interpolated phalanges.
Without terminal discs. 2 species .......... Cassina.*
With discs supported by claw-shaped phalanges, 10 species .......... Hylambates.*
Fingers and toes without interpolated phalanges; without discs.