I. American. _A_. with omosternum .......... _Rhinoderma_, p. 228. _B_. without omosternum. _a_. Pupil horizontal. Precoracoids present. Sacrals strongly dilated. .......... _Oreophrynella._ " moderately " .......... _Phryniseus_, p. 230. " feebly " .......... _Brachycephalus_, p. 231. _b_. Pupil vertical. α. Precoracoids feeble. .......... _Hypopachus._ β. " absent. .......... _Engystoma_, p. 231. _c_. Pupil round. Precoracoids present .......... _Stereocyclops_, p. 231. II. Palaeotropical. _a_. Pupil horizontal. α. Precoracoids present. With palatal teeth. Madagascar. .......... _Rhombophryne._ Palate with dermal papillae. Africa. .......... _Breviceps_, p. 232. With palatal dermal folds. Madagascar. .......... _Scaphiophryne._ With serrated palatal folds. Madagascar and India. .......... _Calophrynus._ Palate smooth. New Guinea. .......... _Sphenophryne_ and _Liophryne_. β. Precoracoids absent. Malacca .......... _Phrynella_, p. 233. New Guinea .......... _Mantophryne._ Africa .......... _Cacosternum._ {228}_b_. Pupil vertical. α. Precoracoids present. India. .......... _Melanobatrachus._ Africa. _Hemisus_, p. 232. β. Precoracoids absent. Tongue oval. India. .......... _Cacopus._ Tongue elliptical. India. .......... _Microhyla._ Tongue divided by a longitudinal furrow. India. .......... _Glyphoglossus_, p. 233. Fingers and toes with discs. Africa and Amboina. .......... _Phrynomantis._ New Guinea. .......... _Callulops._ _c_. Pupil round. Precoracoids absent. Tongue round. India. _Callula_, p. 234. Tongue long, oval, with a deep groove. New Guinea. .......... _Xenorhina._ _Note._–_Xenobatrachus ophiodon_, New Guinea. Palatine bones, each with two large curved teeth. Otherwise imperfectly known. _Rhinoderma._–Omosternum and precoracoids present. Palate without teeth. Tympanum indistinct. Terminal phalanges simple, and not dilated. Tongue heart-shaped, and free behind. Pupil horizontal. Habitat, Chili.