91 



THE COMMON FKOG. 



( Uana temporaria. ) 



Eggs of the common frog. 



This Batrachian (Plate 6, Fig. 1.) is common 

 enough everywhere in Great Britain for us to dis- 

 pense with any very lengthened description. It 

 occurs all over Europe, from the south to the extreme 

 north, being abundant at North Cape, and not un- 

 common in Italy. In Ireland also the frog has 

 become naturalized, having been introduced about 

 the beginning of the eighteenth century. 



Frogs spawn most commonly about the middle of 

 March. A large number of small round opaque 



