TADPOLES AND FROGS 219 



which is closed by a sort of lid. When the young have 

 grown to the condition of little toads, they push open 

 the lids of the pits and swim out of their mother's back. 

 Specimens of these toads, with the eggs and young, in 

 various stages, embedded in their mother's back, are to 

 be seen in most museums of natural history. Toads 

 and frogs catch their prey by throwing forward the 

 sticky tongue which is attached near the front of the 

 lower jaw, and so lick up their victim with startling 

 abruptness. The Cape frog of South Africa (Xenopus), 

 like the Surinam toad (Pipd), has no tongue, and is also 

 remarkable for possessing hard, pointed ends to its toes. 

 It rarely, if ever, leaves the water. 



