340 • HYLIDiE. 



eye ; thumb aa incurved unusually elon- 

 gated osseous spur 8. circumdata, p. 353. — 



Tympanum one third the diameter of the 



orbit ; digital dilatations small 10. hypselops, p. 353. 



Upper eyelid very narrow 18. xerophylla, p. 358. 



Tympanum hidden ; heel with a short der- 

 mal spur 20. punctillata, p. 359. - — 



Tympanum hidden; no tarsal spur 21. jnwictatissima, ^ — 



Tympanum two thirds the diameter of the [p. 359. 



eye ; canthua rostralis nearly straight ; 

 loreal region not very oblique ; no distinct 

 rudiment of pollex 26. leprieurii, p. 361. — 



Tympanum two thirds or three fourths the 

 diameter of the eye ; canthus rostralis 

 curved ; loreal region not very oblique ; 

 no distinct rudiment of pollex 27. huckleyi, p. 362. 



c. Fingers with a slight rudiment of web. - 



Tympanum two thirds the diameter of the 



eye ; latter very small ; snout acute, 



more than twice the diameter of the eye. 9. rostrata, p. 353. 

 Tympanum half the diameter of the eye ; no 



distinct rudiment of pollex . 15, alhoguttata, p. 356. 



Tympanum half or two thirds the diameter 



of the eye ; upper eyelid very narrow . . 17. punctata, p. 357r~-_— 

 Tympanum half the diameter of the eye ; 



loreal region oblique ; heel with a dermal 



spur 22. fasciata, p. 359. 



Tympanum about two thirds the diameter 



of the eye ; canthus rostralis straight . . 23. boons, p. 360. ^ . 



Tympanum three fourths the diameter of 



the eye ; tibia measuring a little more 



than the distance from ayilla to vent . . 24. lancifonnis, p. 361. 

 Loreal region nearly vertical ; heel with a 



dermal spur 25. spectrum, p. 361. — 



d. Fingers quite free. 

 Tympanum three fourths the diameter of 



the eye ; canthus rostralis straight .... 80. planieeps, p. 364. ^~~- 



2. Choanse small ; vomerine teeth 



forming a very open chevron, 

 the point of which is turned 

 forwards 51. vauteri, p. 376.- '^^^ 



3. Vomerine teeth in two groups or short series, transverse 



or obliquely directed backwards and inwards ; choanse 

 small or moderate (with a few exceptions). 



a, Fingers more than one-third webbed. 



