a. Pupil horizontal. Precoracoids present.
Sacrals strongly dilated. .......... Oreophrynella.
Sac"als moderately "dla .......... Phryniseus, p. [230].
Sac"als feebly moel"dla .......... Brachycephalus, p. [231].
b. Pupil vertical.
α. Precoracoids feeble. .......... Hypopachus.
β. Precor"coids absent. .......... Engystoma, p. [231].
c. Pupil round. Precoracoids present .......... Stereocyclops, p. [231].
II. Palaeotropical. a. Pupil horizontal.
α. Precoracoids present.