440 



rounded warts ; toes with 



distinctly swollen tips ........ R. macrodon, p. 448. 



/3'. Skin very warty above ; tibio-tarsal 

 articulation reaching end of 

 snout ........................ R. verrucosa, p. 448. 



y. Skin of back with longitudinal to Ids. JR. tigrina, p. 449. 

 b". Toes not more than half webbed. 

 . Inner metatarsal tubercle shorter 



than inner toe ; belly smooth. 

 a. Inner rnetatarsal tubercle notmore 



than half length of inner toe . . R. limnocharis, p. 450. 

 /3'. Inner metatarsal tubercle more 



than half length of inner toe. . R. rufescens, p. 451. 

 $. Inner metatarsal tubercle very large, 

 compressed, longer than inner toe; 

 belly granulate. 



a. First finger extending much be- 

 yond 2nd ; tympanum about 

 half size of eye .............. R- breviers, p. 451. 



/3'. First linger extending much be- 

 yond 2nd ; tympanum at least 

 two thirds size of eye ; toes 

 hardly one-third webbed .... R. dobsonii, p. 452. 



y. First and second fingers equal ; 



tympanum as large as eye .... R. strachani, p. 452. 



c. Toes dilated into very distinct disks; a 

 free conical papilla on middle of tongue. 

 a'. Toes at least half webbed. 



a". First finger not extending as far as 



2nd .......................... R. leithii, p. 453. 



b". First finger extending slightly be- 



yond 2nd. 

 a'. Toes two-thirds webbed ; tym- 



panum two-thirds diameter of eye R. beddomii, p. 453. 

 ft', loes half-webbed; tympanum as 



large as eye .................. R. semipalmata, p. 454. 



b'. Toes one-third or one-fourth webbed ; 

 1st finger not extending quite so far as 

 2nd. 

 a". Head nearly smooth ; back with short 



glandular folds ; no lumbar spot . . R. leptodactyla, p. 454. 

 b". Head nearly smooth ; back with short 



glandular folds ; a black lumbar spot. R. diplosticta, p. 455. 

 c". Upper surfaces very warty ........ R. phrynodenna, p. 455. 



B. A glandular fold along each side of back ; 

 tympanum very distinct ; digits more or less 

 distinctly dilated at end. 

 a. Toes not or hardly two-thirds webbed. 

 a'. An outer metatarsal tubercle (at base of 



fourth toe). 



a". Skin smooth above ; tibio-tarsal 

 articulation reaching tip of snout, or 

 beyond. 

 a. Foot at least as long as distance 



between tympanum and A~ent .... R. macrodactyla, p. 455. 



/3. Foot shorter than distance between 



tympanum and vent ............ R. gracilis, p. 456. 



