10. CERATOPHRTS. 11. EDALORHINA. 227 



the calf. Browu or olive above, marbled with darker ; soraetimes a 

 rather indistinct light median line on the hinder half of the body. 

 E. S. America. 



a-b. 2 . Brazil. 



c. $ . Tropical America. Sir A. Smith [P.]. 



10. Ceratophrys leyboldii. 



Pyxicephalus leyboldi, Espada, ViaJ. Pad/., Vertehr. p. 15. 



Differs from C. americana by its shorter limbs. The hind limb 

 being carried forwards along the body, the tip of the fourth toe 

 reaches the anterior corner of the eye. 



N. Chili. 



11. EDALORHINA. 



Edalorhina, Espada, Jorn. So. Lish. 1870, p. 58. 

 Bubonias, Cope, Proc. Ac. Philad. 1874, p. 124. 



Pupil horizontal. Tongue oval, notched and free behind. Vo- 

 merine teeth present or absent. Tympaniim very distinct. Fingers 

 free; toes free or nearly so, the tips not dilated. Outer metatarsals 

 united. Omosteruum cartilaginous ; sternum with a bony style. 

 Sacral diapophysis slightly dilated. Terminal phalanges simple. 



W. S. America. 



Synopsis of the Sjpecies. 



A dermal ridge across the interocular space ; 



toes webbed at the base 1. perezii, p. 227. 



No dermal ridge across the interocular space ; 



toes webbed at the base 2. huchleyi, p. 228. 



No dermal ridge across the interocular space ; 



toes quite free 3. plicifrons, p. 228. 



1. Edalorhina perezii. (Plate XYI. fig. 2, upper view of head.) 



Edalorhina perezi, Espada, I. c. and ViaJ. Pad/., Vertebr. p. 105, pi. 1. 

 f. 5. 



Yomerine teeth in two oblique series commencing from the inner 

 hind edge of the choanae. Snout angular, with weU-marked canthus 

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

 interorbital space narrower than the upper eyelid ; tympanum oval, 

 its long axis dii'ected upwards and forwards, as large as the eye. 

 First finger not extending beyond second ; toes with a rudiment of 

 web ; snbarticular tubercles well developed ; two small metatarsal, 

 and three or four conical tarsal tubercles. The hind limb being 

 carried forwards along the body, the tibio-tarsal articulation reaches 

 the eye, or nearly so far. Skin nearly smooth ; a strong fold from 



q2 



