RAXA. 439 



Si/nopsis of LuUan, Oeylonese, and Burmese Sjjecies. 



.. No glandular lateral fold (except in R. liebir/i), 



characterized by hidden tympauuni) ; 



digital expansions, if present, much smaller 



than tympanum. 



a. Toes acutely pointed, very broadly webbed, 



4th not very much longer than 3rd or 



oth ; inner metatarsal tubercle conical. 



a'. First finger extending a little beyond 



2ud ; tympanum as large as eye .... R. hexadactyla, p. 441. 

 b' . First finger not extending beyond 2nd ; 



tympanum usually smaller than eye. . R. cyanophlyctis, p. 442. 

 h. Toes blunt or dilated at tips; no free 

 papilla on middle of tongue. 

 «'. Tj-mpauuni indistinct or hidden. 



a". Lower jaw with a pair of tooth-like 

 bony prominences in front ; no cop- 

 ulatory excrescences in male. 

 n. Toes webbed to extreme tips. 



a. First finger not extending quite 

 as far as 2nd ; skin of back with 



transverse plaits R. corruffcita, p. 443. 



^'. First finger extending as far as 



2nd, or a little beyond R. J:uh!i/\ p. 443. 



j3. Toes not webbed to tips. 



a'. Vomerine teeth in 2 oblique 



series ; skin verrucose R. hiticeps, p. 444. 



|3'. Vomerine teeth in 2 transverse 



series ; skin perfectly smooth . R. khasicma, p. 4 14. 



h". No tooth-like prominences in lower 



jaw ; breeding-male with cop- 



ulatory excrescences on fore limbs 



and breast. 



a . A glandular dorso-lateral fold ; 



tibio-tarsal articulation reaching 



tip of snout, or beyond R. liebi(/ii, p. 445. 



^'. No glandular lateral fold: tibio- 

 tarsal articulation hardly reaching 



eye R. sternosignata, p. 443, 



b Tympanum perfectly distinct. 

 a". Toes more than half webbed. 



a. Vomerine teetli commencing on a 



line with hinder edge of choante. 



a'. Tibio-tarsal articulation not 



reacliing end of snout ; head 



much broader than long R. ft'ce, p. 44G. 



/3'. Tibio-tarsal articulation reaching 

 end of snout ; head longer than 



broad R. anihrsmiii, p. 447. 



y. Tibio-tarsal articulation not 

 reaching end of snout ; head as 



long as i)road R. dories, p. 447. 



^. Vomerine teeth in two strong 

 oblique series commencing from 

 inner anterior corner of choanse. 

 a. Skin smooth above, or with small 



