i6o 



whitish; a light line on each side from the eye along the back; 

 hinder side of thighs and lower surface of tarsus black. From 

 snout to vent 32 mm. 

 Habitat: Sud-Est isl. 



6. Fam. Ranidae. 



Upper jaw toothed, lower one nearly always toothless. Diapo- 

 physes of the sacral vertebra not or very slightly dilated. 

 Terminal phalanges of fingers and toes of various shape. 



Omosternum and sternum with or without bony style. 

 Vertebrae procoelous. No ribs. Os coccygis articulating by 

 two condyles. 



Distribution: cosmopolitan, except the southern part of 

 S.-America, the southern part of Australia, New Zealand and 

 eastern Polynesia. 



Synopsis of the Genera. 



A. Pupil horizontal. No intercalary ossicle between 

 the two distal phalanges of the digits. 



I. Digital disks, if present, devoid of transverse 

 groove. When the toes are free, as is rarely 

 the case, vomerine teeth are always present. 



1. Sternum with bony style. 



a. No dermal fold across the palate. No teeth 

 in the lower jaw. Vomerine teeth rarely 



absent i. Rana p. 161. 



b. No dermal fold across the palate. Lower 



jaw toothed. Vomerine teeth present . . 2. Ccratobatrachus p. 228. 



c. A dermal fold between the choanae. No 



vomerine teeth 3, Oreobat radius p. 229. 



2. Sternum cartilaginous. No vomerine teeth. 4. Oxyglossus p. 230. 



II. Digital disks with a transverse groove along 

 the lower surface. Toes webbed. 



1. Outer metatarsals entirely separated by web. 



a. Fingers free 5. Siaurois p. 234. 



b. Fingers webbed 6. Simomaniis p. 237. 



2. Outer metatarsals united 7. Cornufer p. 238. 



III. Digital disks? Toes free. No vomerine teeth. 8. Bntrachylodes p. 241. 

 B. Pupil horizontal. An intercalary ossicle between 



the two distal phalanges of the digits. 



