AMPHIBIA. 341 



Hyla Laurenti. Tree Frogs. Toes dilated at their 

 extremities. 



Hyla arborea Laur. Roesel. pi. 9, 10. 



Ceratophrys Boie. Horned Frogs. Above the eyes a 

 horn-Hke prominence ; toes pointed. 



C. varius. B. Seba, i. pi. 72. figs. 1, 2. 



BuFo Laurenti. Toads. Body thick, tuberculated ; 

 hinder feet not very long ; teeth none ; nose rounded ; 

 tongue and tympanum distinct. 



B. vulgaris. Rass. pi. 20. 



Rhinella Fitz. muzzle pointed ; head rounded be- 

 hind. 



R. proboscideus. Spix, pi. 21. fig. 4. 



Otilopha Cuv. Muzzle angtdar ; head with a crest 

 on each side^ extending over the parotid. 

 O. margaritifera. Daud. 33. 



Dactylethra Cuv. Toes pointed, the hinder ones 

 widely palmated, the three internal ones with their 

 extremity enveloped in a conical, corneous, black 

 substance. 



D. Iffivis. Daud. pi. 30. fig. 1. 



BoMBiNATOR Merv. Mouth large ; eyebrows rounded ; 

 no claws upon the toes ; tympanum concealed. 

 B. bombina. Daud. 26. 

 Breviceps Merr. Head and mouth very small ; feet 



semi-palmated only ; toes five, four ; tympanum find 

 parotid concealed. 



B. gibbosus. Daud. pi. 29. fig. 2. 



Brachycephalus Fitz. Three toes only on the feet. 

 B. Ephippium. Spix, pi. 20. fig. 2. 



PiPA Daud. Body flattened above ; head large and 

 triangular ; tympanum concealed ; each of the an - 

 terior toes divided at the tip into four points. 

 P. Suritiamensis. Daud. 31, 32. sternalis. Spix, pi. 22. 



z 3 



