B. OPISTHOGLOSSA. 



Batr.vchia Salientia scu ANorRA with a tongue, adherent in 

 front and more or less free behind. 



First Series. OPISTHOGLOSSA OXYDACTYLA. 

 Opisthoglossa ^vith tapering or cylindrical fingers and toes. 



Section I. Ranina. 

 0. OXYDACTYLA with maxiUarv teeth and well-developed ear. 



Fam. 1. RANIDiE. 



Eanixa ^^'ith webbed toes, cyHnchical processes of sacral vertebra, 

 and without paratoids. 



Synopsis of the Genera. 



1. Pseudis. First finger opposite to the three others. South 



America . 



2. Oxyglossiis. Toes entirely webbed ; vomerine teeth none. East 



Indies. 



3. Tomopterna. Toes half- webbed ; a flat sharp-edged spur on the 



metatarsus ; lower jaw with two bony prominences. South 

 Africa. 



4. Rana. No finger opposite to the others ; one or two blunt 



tubercles on the metatarsus ; crown covered with a soft skin ; 

 tongue deeply nicked behind; vomerine teeth. Cosmopolitan. 



5. Sphaerotheca. Head with swollen spherical occiput ; toes half- 



webbed ; a flat sharp-edged spur- on the metatarsus. East 

 Indies. 



6. Calyptocephalus. Crown with a rugose shield ; vomerine teeth 



in a straight line, in the middle internipted. Chili. 



7. Cyclorhamphus. Toes haK-webbcd ; vomerine teeth in two 



groups ; tongue entire behind. Chili. 



8. Pithecopsis. A large gland on each side ; vomerine teeth in 



two olilique series ; tongue entire behind. Bi'azil. 



9. Leiuperus. Toes webbed only at the base : skin granular ; no 



^-omorine teeth. South America. 



10. Limnocharis. Toes webbed only at the base; skin smooth; 



no vomerine teeth. Brazil. 



