25 



a. Outer fingers at least '/j webbed. Vome- 

 I'ine teeth present. 



ce. A dermal ridge along the outer side 



of the fore-arm S. //. niontaiia p. 33. 



/3. No dermal ridge along the fore-arm. 



Skin smooth above. 



|. Outer fingers about '/j to "^j^ 



webbed <). H. rtteppelli p. 35. 



If. Outer fingers nearly half webbed. 10. H. fallax p. 35. 



Iff. Outer fingers '/g webbed 38. H angiana p. 59. 



y. No dermal ridge along the fore-arm. 



Upper parts with scattered warts . . 34. H. liiimcraits p. 56. 



b. Outer fingers at least '/g webbed. No 

 vomerine teeth. 



a.. The heel reaches the tympanum. . . w. H. brachypiis p. 37. 

 /3. The heel reaches at least the eye. 

 j. Tympanum about '/g diameter of 



eye. Toes ^/^ webbed \z. H. oitwcnsi p. 37. 



\\. Tympanum '/^ to '/, diameter of 



eye. Toes about 2/^ vvebbed ... it,. H. atropuuciata p. 37. 

 ttf. Tympanum not quite '/j diameter 

 of eye. Toes nearly entirely webbed. 



Canthus rostralis distinct \i,. H. longkrus p. 38. 



tttt- Tympanum Y3 to '/g cliameter of 

 eye. Toes nearly entirely webbed. 

 Canthus rostralis rounded (10. //. fallax p. 35). 



c. Outer fingers webbed at the base. 



Oi.. Toes narrowly webbed 15. //. alholabris p. 39. 



/3. Toes 2/3 webbed. Heel reaching beyond 



tip of snout 16. H. arfahiana p. 39. 



y. Toes "^j^ webbed. Heel reaching tip 



of snout \%. H. pratti p. 41. 



(J. Toes extensively webbed (the web 

 reaching the disks of third and fifth). 



Heel reaching beyond lip of snout . 19. ZT. wollasioni p. 42. 

 Tympanum present, its diameter at least 

 about half that of eye. 

 a. No vomerine teeth. Outer fingers '/g to 

 nearly '/g webbed. 



cf.. Coarsely granular above (13. H. atropiuictata p. 37). 



/3. Smooth above. 



t. Canthus rostralis distinct 20. H. chloronota p. 42. 



tt- Canthus rostralis rounded \o. H. fallax p. 35. 



