436 BANID.E. 



b". No vomerine teeth MICRIXALUS, 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 IXALTJS, 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. lavis, p. 437. 



1. Oxyglossus lima. 



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

 Oxyglossus lima, Tschudi, Class. Batr. p. 85 ; Gunth. Kept. 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. 1'ingers rather slender, acutely pointed, first not 

 extending beyond second ; toes pointed, fourth not very much 

 longer than third and fifth, broadly webbed ; subarticular tubercles 



