2. KANA. 15 



Toes very broadly webbed ; tympanum 



hidden 4. crassipes, p. 19. 



Toes entirely webbed ; tympanum nearly 



as largo as the eye ; a single metatarsal 



tubercle 66. oxjjrhynclius, p. 51. 



Toes entirely webbed, the web not emar- 



ginate ; tympanum nearly as large as the 



eye ; two metatarsal tubercles 67. longirostris, p. 52. 



Toes nearly entirely webbed; tympanum 



two thirds the width of the eye ; a tarsal 



and two metatarsal tubercles 68. trinocUs, p. 52. 



Toes two-thirds webbed ; tympanum two [p. 52. 



thirds the width of the eye 69. mascareniensis, 



b. Vomerine teeth in two series or groups between the 



choanffi. 



Vomerine teeth in two oblique groups ; 



toes two-thirds webbed 12. suhsigillata, p. 23. 



Vomerine teeth in two oblique series ; 



toes nearly entirely webbed 18. occipitalis, j). 27. 



Vomerine teeth in two transverse series ; 



toes two-thirds webbed 65. angolensis, p. 50. 



c. Vomerine teeth in two groups on a level with the 



hinder edge of the choanae. 



Toes not quite two-thirds webbed 11. blmifordi, p. 23, 



Toes nearly entirely webbed 64. fuscigula, p. 50. 



2. Toes webbed at the base. 



a. Vomerine teeth in two long, nearly straight series on 



a level with the front edge of the choanse. 



Tibio-tarsal articulation reaching the tip of 



the snout, or somewhat beyond 70. grayi, p. 53. 



Tibio-tarsal articulation reaching far beyond 



the tip of the snout 71. fasciata, p. 54. 



b. Vomerine teeth in two oblique 



series between the choanse . 83. galmnensis, p. 61. 



B. Tips of fingers and toes not dilated; inner metatarsal tubercle 

 shovel-shaped. 



Metatarsal tubercle reaching beyond the 



tip of the snout 22. tuberculosa, p. 30. 



Metatarsal tubercle reaching nearly the tip 



of the snout ; skin smooth 23. natcdensis, p. 30. 



Tympanum rather indistinct ; two meta- 

 tarsal tubercles 24. cordofana, p. 31. 



