226 



EANIDJE. 



fourth. Head small ; snoufc rounded, without canthus rostralis ; 

 interorbital space narrower than the upper eyelid. Fingers 

 short, with blunt tips, Hrst not or but slightly extending beyond 

 second ; toes entirely or nearly entirely webbed, the web more 

 emarginate than in 0. lima, the tips swollen into small disks ; 

 subarticular tubercles small ; inner metatarsal tubercle elliptic, 

 compressed ; outer metatars.il tubercle absent or very indistinct ;, 

 a short tarsal fold. The tarso-metatarsal articulation reaches the 

 tip of the snout, or a little beyond. Skin smooth, or with small 

 smooth warts. Brownish above, with or without rather indistinct 

 darker spots ; sometimes a light vertebral line ; a light streak from 

 the eye to the commissure of the mouth often conspicuous ; hind 

 limbs with rather irregular dark cross-bands; lower parts whitish, 

 throat often speckled with brown. Male with an internal vocal 

 sac. 



From snout to vent 40 millim. 



The tadpole is remarkable for the small mouth, with horseshoe- 

 shaped lip without liorny teeth, the closed mouth appearing as a 

 vertical slit ; a black horny beak ; eyes on upper surface ; spira- 

 culum sinistral, anus median ; tail acutely pointed, with low 

 crests, more than twice as long as body. Olive above, white 

 beneath, tail speckled with dark brown. Total length 51 millim. 



Burma, Siam, Malay Peninsula (Perak, Jalor) aud Archipelago. 



Genus RANA. ,^ 



Linn. Syst. Nat. i, p. 354 (1766). 



Pupil horizontal. Tongue free and deeply notched behind. 

 Vomerine teeth. Tympanum distinct or hidden. Fingers free, 



Fig. 09. — Open mouth of liana onacrodon. 



toes webbed, with simple or dilated tips. Outer metatarsals 

 separated by web. Omosternum and sternum with a bon}' style. 

 Distal phalanges obtuse or T-shaped. 



