HYLA. 



249 



length 



of the inner toe ; outer metatarsal tubercle 

 very small or indistinct. A more or less distinct fold 

 along the inner edge of the tarsus. 



Fig. 92. 



Lower surface of foot. 



Skin perfectly smooth above, granular on the belly 

 and under the thighs, also on the throat in the female ; 

 a fold above the tympanum, and another across the 

 breast. 



Usually uniform bright green above, but turning to 

 grey, yellowish, or blackish, with or without small 

 darker spots ; white beneath ; inner fingers and inner 

 toes pale yellow or rosy. The markings which 

 distinguish the different varieties will be noticed 

 further on. Iris golden, more or less obscured by 

 brown vermiculations, or nearly entirely of a rather 

 dark brown. 



Fig. 93. 



Male before and after inflation of the vocal sac. 



Male distinguished by a large external subgular 

 vocal sac, of yellow, brown, or green colour, which 

 when empty forms folds, and when blown out resembles 

 a bladder considerably larger than the head. Apparent 

 copulatory asperities are absent, but the base of the 

 inner finder is sometimes covered durinp; the breeding 

 season with small, colourless, horny granules. 



