6 Records of the Indian Museum. [Voi,. XX, 



Vomerine teeth in small groups ; first and second 

 fingers equal, tips of toes swollen or dilated into very 

 small discs ; tibia 2i to 3^ times as long as broad ; 

 throat and belly usually smooth ... ... /?. cyanophlycfis, Schn. 



2. Inner metatarsal tubercle small or large, blunt or compressed, not digiti- cm-..- 

 form ; toes \ to entirely webbed. .^r^ 



a. Toes with obtuse or slightly swollen tips ; vomerine teeth between the 

 choanae, often extending posteriorly beyond them ; male with a more 

 or less developed pad on the inner finger. 

 o. No outer metatarsal tubercle ; toes f to entirely webbed ; first finger 

 longer than second ; tibia 2j to 3 times as long as broad ; male with 

 external vocal sacs. 

 Toes completely webbed; tibio-tarsal articulation 



reaching tip of snout ... ... ... R. veyritciilosa, Roux. 



Toes completely or nearly completely webbed ; tibio- 

 tarsal articulation not reaching tip of snout . . R. tigrina, Daud. 

 Toes incompletely webbed, or with the web deeply - 

 notched ; tibio-tarsal articulation not reaching tip of 

 snout ... ... ... . . R. cancvivora, Gravh. . , 



$. Usually a more or less distinct outer metatarsal tubercle. k-m^.-^. 



* Toes f to J webbed ; tibia 35 to 4 times as 

 long as broad ; head and back rough with 

 warts of unequal size ; male with internal 



vocal sacs ... ... ... R. verrucosa, Gthr. 



** Toes usually not more than | webbed, rarely \ ; male with ex- 

 ternal vocal sacs. 

 Toes 5 to f webbed ; tibia 2| to 3I times as long as 

 broad ; tibio-tarsal articulation not reaching beyond 



tip of snout ; first finger longer than second ... R. limiiocharis, W'xegm./'-^' 



Toes not quite 3 webbed ; tibia 3 to 4 times as long as "'"" 



broad ; tibio-tarsal articulation not reaching tip of 

 snout ; first finger not or but very slightly longer than 

 second ... ... ... ... R. greenii, Blgr. 



Toes barely 5 webbed ; tibia 4 to 43 times as long as 

 broad ; tibio-tarsal articulation reaching tip of snout 



or beyond ; first finger longer than second ... R. brevipalmata, Peters./: 



b. Toes with the tips dilated into distinct discs ; male without or with inter- 

 nal vocal sacs, without enlargement of the fore limb or inner finger, 

 often with tooth-like bony processes in front of lower jaw. 

 a. Vomerine teeth extending behind level of choanae, or entirely behind 

 them. 



* Tibia 3 to 4 times as long as broad ; nasal bones large and in contact 



with each other and with the frontoparietals, 

 f Toes J to entirely webbed ; interorbital region flat. 

 § First finger much longer than second. 

 Tympanum 5 to f diameter of eye ; tibia more than 



twice in length from snout to vent ; heels not over- 

 lapping ; male without vocal sacs, without tooth-like 



processes in lower jaw ... ... R. griiniiiens, Daud. 



Tympanum f to f diameter of eye ; tibia ij to 2\ times 



in length from snout to vent ; heels overlapping ; 



discs of toes very small , male without vocal sacs, 



with tooth-like processes in lower jaw ... .. / R, macrodon, D. et B. 



Tjmpanum | to f diameter of eye ; tibia 2 to 2j times 



in length from snout to vent ; heels not overlapping ; --■■ ■ / , - ^■ 



discs of toes rather large ; male with vocal sacs, with 



tooth-like processes in lower jaw ... ... R. magna, Stejn. 



Tympanum | to ~ diameter of eve ; tibia nearly 2 to 2j 



times in length from snout to vent : heels overlapping ; 



discs of toes very small ; male with vocal sacs, with 



tooth-like processes in lower jaw ... ... R. modesta, Blgr. 



§§ First finger not much longer than second. 

 Tympanum -| size of eye; first finger as long as or a [v. Kamp. 



little shorter than second ... ... ... 1 jR. microtympanum, 



