4. HYLA. 339 



Outer fingers half webbed ; upper surfaces 



with scattered tubercles ; tympanum 



nearly two thirds the diameter of the eye 11. partialis, p. 351. 

 Outer fingers two-thirds webbed ; skin 



smooth above ; heel with a very short 



triangular dermal appendage 16. albomarginata , 



Outer fingers balf webbed ; upper surfaces [p. 35'';. 



granulate ; tympanum half the diameter 



of the eye, or rather less 19. granosa, p. 358. 



ft. No projecting rudiment of pollex. 



Outer fingers half or two-thirds webbed; 

 tympanum two thirds the diameter of 

 the eye ; the latter less than the length 

 of the snout ; heel with a triangular der- 

 mal appendage 2. appendicul-ata, 



Outer fingers half webbed ; tympanum two [p. 319. 



thirds the diameter of the eye, which 

 equals the length of the snout ; heel with 

 a triangular dermal appendage 3. cryptomclus, p. 350. 



Outer fingers nearly entirely webbed : disks 

 immensely large, the largest being twice 

 the size of the tympanum 4. vasta, p. 351. 



Outer fingers nearly two-thirds webbed ; 

 tympanum two thirds the diameter of the 

 eye ; upper surfaces with irregular tuber- 

 cles; belly dark-spotted 12. inframaculata, 



Outer fingers entirely webbed ; tympanum [p. 354. 



three fourths the diameter of the eye ; 

 heel with a triangular dermal appendage 13. corticalis, p. 355. 



Outer fingers nearly entirely webbed ; tym- 

 panum two thirds the diameter of the 

 eye ; upper surface covered with large 

 and small warts 14. tuberculosa, p. 355. 



Outer fingers nearly half webbed ; tympa- 

 num as large as the eye ; borders of fronto- 

 parietals forming two strong ridges .... 28. taurina, p. 363. 



Outer fingers nearly entirely webbed ; tym- 

 panum three fourths the diameter of the 

 eye ; borders of fronto-parietals forming 

 two strong ridges 29. langsdorffii, p. 364. 



b. Fingers one-third webbed, or nearly so. 



Tympanum two thirds the diameter of the 



eye ; tibio-tarsal articulation reaching the 



tip of the snout or beyond 6. crepitans, p. 352. 



Tympanum two thirds the diameter of the 



eye; tibio-tarsa] articulation not reaching 



the tip of the snout 7. indris, p. 353. 



Tympanum two thirds the diameter of the 



z2 



