•64 F ivceeditif/f^ of the Rotjal Society of V'ldorin,. 



studied both P. (i/ustrtdis and P. bibronil in their native 

 haunts, is quite convinced that they are good species, dis- 

 tinguished by constant diiferences in colour and pattern, in 

 temperament, in habits, and in the time of the breeding 

 season. P. dendyi is widely removed from all by its 

 conspicuous black and white coloration. That P. semi- 

 marmorata is also very constant in its colouring and the 

 pattern of the warts on the dorsal surface, I have found 

 after examining dozens of specimens. In its geographical 

 distribution, it is our southern representative of P. hdn'onlL 

 the two forms oidy overlapping in the Grampians. We have 

 thus another instance of the distinctness of s]-)ecies on the 

 two sides of the Great Dividino- Ranoe. 



