664 PROCEEDINGS OF THE ACADEMY OF [Sept., 



variable. In some living examples I noticed here and there one a 

 trifle pale, or with paler streaks, or the upper jaw more bronzed. The 

 lower lateral streak from below the tympanum appears to var}^ also, 

 as it is either ochraceous, dull reddish, brownish, olivaceous or whitish. 

 Some variation may also be noticed in the skin. Some have the dermal 

 papillae rather more scattered than others. These are usually the 

 smaller individuals, as the larger ones have a somewhat warty appear- 

 ance. 



Explanation of Plate XL. 



Left figure, female. 



Middle figures, dorsal and ventral \iews of males with distended vocal vesicles. 



Right figure, more usual type of coloration of male with vocal vesicles collapsed 



