TAILLESS BATRACHIANS 215 



hostile attitude, screaming loudly all the while. When 

 in this fit of anger the lungs are much inflated, and the 

 body, which is raised above the ground, becomes swollen 

 like a balloon. The Ornamented Ceratophrys will feed on 

 worms, other frogs, and mice ; that it is capable of under- 

 going long periods of starvation was recently demonstrated 

 by a specimen belonging to Mr. Albert Pam, which, in 

 spite of the fact that it was not fed at all during the absence 

 of its owner, a period of over nine months, was in perfect 

 condition on his return. 



In the Horned Ceratophrys, C. cornuta, which inhabits 

 Northern Brazil, the upper eyelids are produced into very 

 large horn-like appendages. The head is enormous and 

 much elevated. In colour it is orange and brown above, 

 with dark symmetrical m.arkings. 



Some of the frogs of the genus Leptodactylus, of Tropical 

 America, which much resemble true frogs in their appear- 

 ance, have exceedingly interesting breeding habits. The 

 pupil is horizontal. The tympanum is usually large and 

 always distinct. The fingers and toes are free, not, or 

 but slightly, dilated at the tips. 



L. ocellatus lays its eggs in a small puddle which it 

 produces by building a wall of mud on the edge of a pond, 

 and in which the tadpoles remain imprisoned until the 

 rainy season, when the walls fall in and they are liberated. 



Some other members of the genus lay their eggs in 

 foamy masses, under leaves, close to the banks of the 

 ponds, into which they are washed during the period of 

 heavy rains. 



Hylodes is a large genus of small arboreal frogs, also of 

 Tropical America. The fingers and toes are free, or almost 

 free, with dilated tips. 



