148 ENGYSTOMAXID^. 



Pupil erect ; tongue obloug ; palatiue bones forming an acute ridge ; 

 tympanum hidden 11. Callula, p. 167. 



Tongue heart-shaped ; palatine hones each with two curved teeth : 

 tympanum distinct 12. Xeiiohatrachiis, p. 172. 



Pupil erect ; tongue large, oblong, nicked behind ; tympanum hid- 

 den ; toes free 13. Phrynomantis, p. 172. 



Pupil erect ; tongue oval ; two small bony prominences between the 

 choanal ; toes webbed at the base. .^ 14. Cacopus, p. 173. 



Pupil erect ; tongue divided into two lateral halves by a deep groove. 



1 5. Glyphoglossus, p. 175. 



III. Precoracoids present ; coracoids very much dilated. 

 Pupil horizontal; no palatine teeth . . 16. Breviceps, p. 176. 

 Palatine teeth 17. Rhombophryne*, p. 177. 



IV. Precoracoids present ; coracoids directed backwards. 

 Pupil erect 18. Hemisus, p. 178. 



1. EHINODERMA. 



Rhinoderma, Dnm. 8j- Bibr. viii. p. 057; Qiinth. Cat, p. 48 ; Cope, 

 Journ. Ac. Philad. (2) vi. 1867, p. 196. 



Pupil horizontal. Tongue subtriangular, entire or slightly nicked 

 and free behind. Vomerine teeth none. Tympanum hidden, or 

 slightly distinct. Fingers with a slight rudiment of web ; toes 

 incompletely webbed, the tips not dilated. Outer metatarsals united. 

 Coracoids and precoracoids parallel ; a cartilaginous omosternum ; 

 a cartilaginous sternum. Diapophyses of sacral vertebra mode- 

 rately dilated. Terminal phalanges simple. 



Chili. 



1. Rhinoderma darwinii. 



Rlilnoderma darwinii, Oilnfh. Cat. p. 48. 

 Ehinoderma darwinii, Bum. ^- Bihr. p. 659 ; Bell, Zool. Beagle, 

 Rept. p. 48, pi. 20. f. 1 & 2 ; Gidchen. in Gay, Hist. Chile, 

 p. 122, pi. 7. f. 1-10 ; Girard, U.S. E.ipl Exped., Herp. p. 71 ; 

 Cunningh. Trans. Linn. Soc. xxviii. p. 468; Espada, Viaj. Pacif., 

 Vert, p." 129. 



Snout triangular, ending in a dermal lobe ; canthus rostralis 

 angular ; loreal region vertical ; interorbital space broader than the 

 upper eyelid. Pingers moderate, pointed, first shorter than second ; 

 toes rather slender, pointed, one-third webbed ; subarticular tubercles 



* Sternal structure unknown, but the animal stated to be closely allied to 

 Breviceps. 



