2. CERATOHYLA. 453 



2. CERATOHYLA. 



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

 Cerathyla, Espada, Jorn. Sc. Lisb. iii. p. (!:J. 



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 ringers 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. proboscidea, 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. bubalus, p. 453. 



Tongue longer than broad ; hinder edge of 



the helmet strongly curved 3. fasciata, 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 proboscidea. 



Cerathvla proboscidea, Espada, Jorn. Sc. Lisb. iii. p. G4, and T'icj. 

 Pact/., 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 the helmet slightly curved. First 

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

 triangular dermal appendage. 



Ecuador. 



2. Ceratohyla bubalus. 



Cerathyla bubalua, Espada, Jorn. Sc. Lisb. iii. p. 64, and Via/, 



Pad/,, Vertebr. pi. 5. 1". '•'>. 



Tongue circular. Anterior vomerine teeth longer than the others. 

 Snout with a very short pointed dermal appendage ; upper eyelid 



