1. RANID^. 



Ranidse, part., Cystignatliidse, part., Polypedatidse, Hylodidte, part., 



Gimth. Cat. Batr. Sal. 

 Ranidse, Cope, Nat. Hist. Mev. 1865. 



Colostethidfe and Eauidae, Cope, Journ. Ac. Philad. (2) vi. 18G7. 

 Pol_y|3edatidffi, part., and Ranidfe, part., Mivart, Proc. Zool. Soc. 



1869. 



Upper jaw toothed ; diapophyses of sacral vertebra uot, or but 

 very slightly, dilated. 



The members of this family show no great differences in the 

 structure of the sternal apparatus. The preeoracoids are always 

 present, their axis being parallel with that of the coracoids, and 

 their distal extremity resting upon that of the latter. The preeo- 

 racoids are much weaker than the coracoids. In most genera an 

 omosternum and a sternum are well developed and furnished with 

 a bony style. In Oxijglossus, Hijlixahis, and Prostherapis the 

 sternum lacks the bony style, and so does also the omosternum in 

 Ncmnoplirys and PhyUodromus. In Colostethus, according to Cope, 

 the omosternum is totally absent. 



The vertebrae are procceUan. The coccyx is attached to two con- 

 dyles. There are no ribs. 



A fronto-parietal fontanelle is constantly absent. 



The distal phalanges may be simple, pointed, or subtriangular, 

 T-shaped, Y-shapcd, or even claw-shaped (Ilylambates), the latter 

 structure being met with in the Hylidce, Ampliignathodontldce, and 

 Hemiiihractidoi only. ■» 



Synopsis of the Genera. 



Pupil horizontal : tongue entire ; toes webbed ; outer metatarsal 

 separated by web ; sternum without bony style ; omosternum 

 with a bony style 1. Oxyglossus, p. 5. 



Pupil horizontal ; tongue more or less deeply emarginate ; vomerine 

 teeth ; fingers perfectly free, toes webbed ; outer metatarsals 

 separated by web ; omosternum and sternum with a bony style. 



2. Rana, p. 6. 



Characters of Rana, but the fmgers more or less webbed. 



3. Rhacophorus, p. 73. 



Characters of Wiacopliorus, but the two inner fingers opposite to 

 the two outer 4. CMromantis, p. 92. 



Pupil horizontal ; tongue deeply emarginate : vomerine teeth 

 none ; outer metatarsals separated by a groove or narrow web ; 

 omosternum and sternum with a bony style. 



5. Ixalus, p. 93. 

 b2 



