RAN A. 



305 



females they vary from pale yellow to orange, usually 

 spotted or marked with brown, orange, or red. There 

 are, however, specimens in which the belly is un- 

 spotted, more particularly those from Spain. 



Iris golden, sometimes obscured with brown vermi- 

 culations. 



Males differ from females in the stronger, more 

 muscular fore limbs, which acquire an extraordinary 



Fig. 110. 



Hand and foot of breeding male (lower views). 



development during the pairing season ; the pad-like 

 swelling of the inner side of the first finger, which 

 becomes covered with black horny spinules during 

 the pairing season ; the greater development of the 



Fig. 111. 



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> 



Gular region of breeding male, with inflated vocal sacs. 



web between the toes ; and the presence of a pair of 



internal vocal sacs, situated at the sides of the throat. 



In breeding males the skin acquires a spongy ap- 



x 



