2. cERAToarLA. • 453 



2. CERATOHYLA. 



Hemiphractus, sp., Peters, Mon. Berl. Ac. 18G2, p. 145. 

 Cerathyla, JEspada, Jorn. Sc. Lisb. iii. p. 63. 



Pupil horizontal. Tongue entire, slightly free behind. Teeth on the 

 vomers and palatine bones. Head large, helmet-shaped ; orbit com- 

 pletely enclosed. Tympanum distinct. Fingers with an indistinct 

 rudiment of web ; toes webbed at the base ; tips of fingers and toes 

 dilated into regular disks. Outer metatarsals united. Omosternum 

 rudimentary ; sternum a cartilaginous plate. Terminal phalanges 

 claw-like. 



Ecuador. 



Synopsis of the Species. 



I. Upper eyelid produced into a horn-like 



dermal appendage ; snout with a 



long dermal appendage 1. prohoscidea, p. 453. 



II. Upper eyelid rounded, tubercular ; snout with a short dermal 



appendage. 



1. Tibio-tarsal articulation not reaching beyond the tip of the 



snout. 



Tongue circular ; the distance from the ex- 

 tremity of one of the lateral processes of 

 the helmet to the other equals its distance 

 from the tip of the snout 2. bubcdus, p. 453. 



Tongue longer than broad ; hinder edge of 



the helmet strongly curved 3. fasciaia, p. 454. 



Tongue broader than long ; hinder edge of 



the helmet slightly curved 4. pahnarum, p. 455. 



2. Tibio-tarsal articulation reaching 



beyond the tip of the snout .... 5. braconnieri, p. 455. 



1. Ceratohyla prohoscidea. 



Cerathyla prohoscidea, JEspada, Jorn. Sc. Lisb. iii. p. 64, and Viaj. 

 Pacif., Vertebr. pi. 5. f. 2. 



Tongue longer than broad. Snout with a long, compressed, bifid, 

 dermal appendage ; upper eyelid produced into a horn-like dermal 

 appendage. Hinder edge of tlie helmet slightly cm-ved. First 

 finger longer than second ; toes one-third webbed. Heel with a 

 triangular dermal appendage. 



Ecuador. 



2. Ceratohyla buhalus. 



Cerathyla bubahis, Usjx/da, Jorn. Sc. Lisb. iii. p. 64, and Viai. 

 Pacif., Vertebr. pi. 5. f. 3. 



Tongue circular. Anterior vomerine teeth longer than the others. 

 Snout with a very short pointed dermal appendage ; upper eyelid 



