i63 



/3. Toes 2/3 to 3/4 webbed. Heel reach- 

 ing the eye 13. ^. opisthodon p. 185. 



y. Toes webbed to the disks. Heel 



reaching the eye \i,. R. ventrkosa p. 186. 



3. Outer metatarsals separated at least in their 

 distal half. Tongue without papilla. Toes 

 entirely or nearly entirely webbed. Usually 

 no outer metatarsal tubercle. 



a. Dilatations of fingers and toes without 

 groove between upper and lower surface. 

 X. Tympanum distinct. 



f. Heels not overlapping. Male without 



vocal sacs a,. R. grunnkns p. 172. 



tt- Heels overlapping. Male without 



vocal sacs 5. ^. macrodon p. 174. 



ttt- Heels overlapping or meeting. Male 



with internal vocal sacs b. R. modesta p. 176. 



/3. Tympanum hidden. Heels not over- 

 lapping. Male without vocal sacs.. . . 7. A", kiihli p. 178. 



b. Dilatations of fingers and toes with a 

 groove between upper and lower surface. 

 «. First finger shorter than second. 



t. Dorsolateral fold present (42. R. lahialis p. 220). 



tt- No dorsolateral fold Zl- R. kampeni p. 212. 



^. First finger as long as second. Nostril 

 slightly nearer to the eye than to the 



tip of the snout 36. A", cavitympanuni p. 21 1. 



7. First fingers as long as second. Nostril 

 nearer to the tip of the snout than to 

 the eye. Disks of toes smaller than those 

 of fingers. 



f. Heel reaching far beyond tip of snout. 38. R. crassiovis p. 213. 

 tt- Heel reaching between eye and 



°°stril 39- ^. everetti p. 214. 



J. First finger as long as or longer than 

 second. Nostril in the middle between 

 tip of snout and eye, or nearer to the 

 first. Disks of toes not smaller than those 

 of fingers. 



t. Heel reaching far beyond tip of snout. 35. R. zvhiteheadi p. 210. 

 tt- Heel reaching slightly beyond tip of 



snout, or not so far (27. R. arfaki p. 199). 



4. Outer metatarsals separated at least in their 



