9. HTLODES. 201 



|3. Vomerine teeth, in two groups, or oblique 

 series, behind, and not outwards beyond the 

 choanse. 



First toe as long as second 30. auriculatus, p. 214. 



Vomerine teeth in two small oblique 



series ; tympanum scarcely half the 



diameter of the eye 31. maHinieensis, p. 214. 



Head broader than the body 32. varians, p. 215. 



Canthus rostralis rounded; tympanum 



one third the diameter of the eye .... 33. bogotensis, p. 215. 

 Tongue very large ; tympanum one third 



the diameter of the eye 34. bicumidus, p. 215. 



Snout longer than the diameter of the 



eye; disks much developed, truncate . 36. cruentus, p. 216. 

 Tympanum very smaU, one eighth the 



area of the eye ; disks truncate .... 35. eerasinus, p. 216. 

 A strong fold across the chest ; habit of 



Hyla arborea 37. unistrigatus, p. 217. 



Fronto-parietals a little concave, their ' 



edges slightly prominent, their width 



almost twice that of the upper eyelid . 38. bucJdeyi, p. 217. 



Tympanum hidden 39. whymperi, p. 218. 



Tympanum slightly distinct ; tibio-tarsal 



articulation marking the shoulder . . 40. curtipes, p. 218. 



y. Vomerine teeth between the choanse. 



Fingers long; tips of fingers and toes 



truncate 41. leptopus, p. 219. 



b. Head with serrated ridges. 



Vomerine teeth in two oblique, slightly 



arched series 42. galdii, p. 219. 



2. Head very large, with strong superciliary bony ridges. 



Tibio-tarsal articulation reaching the 



nostril 43. sulcatus, p. 220. 



Tibio-tarsal articulation not reaching the 



nostril 44. biporeatus, p. 220. 



Upper eyelid with a horn-like dermal 



appendage 45. cornutus, p. 220. 



1. Hylodes palmatus. 



Leiyla gUntherii, Keferst. Arch.f. Naturg. 1868, p. 296, pi. 9. f . 4 & 5. 

 Liyla rugulosa, Cope, Proc. Amer. Philos. Soc. 1869, p. 160. 

 Hylodes rugosus, Brocchi, Miss. So. Mex., Batr. p. 54. 



Tongue oval, emarginate. Vomerine teeth in two approximated 

 fasciculi behind the choanse. Snout acuminate, with distinct can- 

 thus rostralis ; nostril much nearer the tip of the snout than the 



