148 ALLIACEOUS TOAD. 



to these frogs alone, but seems, in a greater or less 

 degree, to run through the whole genus ; the soft, 

 pulpy, and dilated form of the full-grown tadpole 

 generally appearing larger than that of the newly- 

 formed frog. These tadpoles are extremely vora- 

 cious, and if kept in glasses of water, and fed with 

 lettuce leaves and other vegetables, may be heard 

 while in the act of eating, to the distance of seve- 

 ral feet. 



This species seems to have been in a great de- 

 gree unknown before the time of Roesel. It is 

 an inhabitant of the waters, and but rarely appears 

 on land, which is one principal cause of its hav- 

 ing been so little attended to. The common Toad, 

 on the contrary, is rarely found in the water, 

 except during the breeding season, when it fre- 

 quents stagnant waters in order to deposit its ova. 

 The Alliaceous Toad is also of a much more lively 

 and active nature; its motion being sometimes ra- 

 ther a kind of leaping than crawling pace ; and on 

 the hind feet is a sort of spurious claw or horny 

 callus, situated beneath the heel, and which is 

 not to be found in the common Toad. 



