II. Australian genera. The terminal phalanges are simple and not dilated. The omosternum and metasternum are cartilaginous, the latter forming a plate, semi-ossified only in Heleioporus.
A. Pupil contracted into a horizontal slit.
a. Omosternum rudimentary. Vomerine teeth present.
α. Tympanum distinct .......... Phanerotis fletcheri.
β. Tympanum hidden .......... Cryptotis brevis.
b. Omosternum present. Vomerine teeth vestigial. .......... Crinia, 4 species.
c. First finger opposed to the others .......... Chiroleptes, p. [221].
B. Pupil contracted into a vertical slit.
a. Omosternum rudimentary. Vomerine teeth absent. .......... Hyperolia marmorata.
b. Omosternum fully developed. Vomerine teeth present.