436 BANIDjE. 



b". No vomerine teeth MICBIXALUS, p. 464. 



c". Vomerine teeth ; pupil vertical . NYCTIBATRACHUS, p. 467. 

 b'. Toes free ; outer metatarsals bound 

 together or separated by a groove. 



a". Pupil vertical NANNOBATRACHUS, 'p. 468. 



b". Pupil horizontal NANNOPHRYS, p. 469. 



B. An intercalary ossification between the 

 distal and penultimate phalanges ; ex- 

 tremity of penultimate phalanx well 

 indicated externally (fig. 128, 1). 



a. Vomerine teeth , . . RHACOPHORUS, p. 470. 



b. No vomerine teeth IXALUS, p. 481. 



Genus OXYGLOSSUS, 

 Tschudi, Class. Batr. p. 85, 1838. 



Pupil horizontal. Tongue narrow, entire and free behind. 

 Vomerine teeth none. Tympanum indistinct. Fingers free ; toes 

 webbed, the tips not dilated into regular disks. Outer metatarsal 

 separated by web. Omosternum with a bony style ; sternum a 

 cartilaginous plate. 



Fig. 129. Oxyglossus lima. Open mouth and pectoral arch. 



Distribution. Southern China and Burma to the Malay Archi- 

 pelago. 



Three species are known, of small size and thoroughly aquatic. 



Synopsis of Indian and Burmese Species. 



Tongue pointed behind O. lima, p. 436. 



Tongue rounded behind O. l&vis, p. 437. 



1. Oxyglossus lima. 



Rana lima, Gravenh. Delic. Mus. Zool. Vratisl. p. 41. 

 Oxyglossus lima, Tschudi, Class. Batr. p. 85 ; Gunth. Eept. B. I. 

 p. 401 ; Bouleny. Cat. Batr. Sal. p. 5. 



Tongue elongate, extensively free and pointed behind. Habit 

 stout. Head small ; snout short, rather pointed, without canthus 

 rostralis ; interorbital space very narrow, much narrower than the 

 upper eyelid. Fingers rather slender, acutely pointed, first not 

 extending beyond second; toes pointed, fourth not very much 

 longer than third and fifth, broadly webbed ; subarticular tubercles 



