I 



!), HYLODES. 201 



jy. Vomerine teeth in two groups, or oblique 

 scries, behind, and not outwcards beyond the 

 choante. 



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



Vomerine teeth in two small oblique 



series ; tympanum scarcely half the 



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



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



Canthus rostralis rounded ; tympanum 



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

 Tongue very large ; tympanum one third 



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



Snout longer than the diameter of the 



cj'c ; disks much developed, truncate . 30. cncentus, p. 216. 

 Tympanum very small, one eighth the 



area of the eye ; disks truncate .... 35. cerasinus, p. 210. 

 A strong fold across the chest ; habit of 



Hyla arhorea 37. unistrigatus, p. 217. 



Fronto-parietals a little concave, their 



edges slightly prominent, their width 



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



Tympanum hidden 39. whymperi, p. 218. 



Tympanum slightly distinct ; tibio-tarsal 



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



y. Vomerine teeth between the choana?. 

 Fingers long; tips of iingors and toes 



truncate 41. leptopus, p. 219. 



h. Head with serrated ridges. 



Vomerine teeth in two oblique, slightly 



arched series 42. gnldii, p. 219. 



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



Tibio-tarsal articulation reaching the 



nostril 43. sulcntus, p. 220. 



Tibio-tarsal articulation not reaching the 



nostril 44. hiporcafus, p. 220. 



Upper eyelid with a horn-like dermal 



appendage 45. cornutus, p. 220. 



1. Hylodes palmatus. 



Leiyla giiutherii, Keferst. Arch.f. Xattmj. 18G8, p. 290, pi. 9. f. 4 & -5. 

 Liyla rugulosa, Cope, Proc. Amer. Philos. Soc. 18G9, p. 100. 

 Hylodes riigosiis, Brocchi, Miss. Sc, Mex., Bad: p. 54. 



Tongue oval, emarginate. Vomerine teeth in two approximated 

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

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



