■ Distribution of Moths of the Sub-family Bistonincs. 69 



life in those upland regions. Not only was this so, but it was 

 so very adaptable in its physiology as to be able to endure 

 all the various conditions found on the enormous Central 

 Plateaux to the remotest nooks of which, south, east, and 

 west, it advanced. 



However, such diverse climatic factors as it met with could 

 not be without their inevitable effects ; like all other virile 

 genera under similar circumstances, it broke into several 

 species, some broadcast and some local. 



Subsequently, the disruptions and upheavals of Early 

 Pliocene times in Arabia and Palestine, disastrous in their 

 results, made the first gap in the continuity of the allied genera, 

 to be followed much later by the further inroads already 

 depicted as severing the genus Biston into two sections ; thus 

 we find Phthonosema situated in Eastern Asia and far away 

 from it, its allies, Aphilopota and Euhyja, in Africa. 



Nevertheless, however conspicuous this discontinuity may 

 seem now, it is only too easy to obtain an exaggerated notion 

 thereof. Careful examination of the map will show that its 

 mileage is much less significant than that presented by the 

 outliers of Phigalia, Poecilopsis and other genera. 



Indeed, were it not that one extreme lay in the Far East 

 of Asia and the other in the remote South of Africa, the advent 

 of desert conditions would have, in itself, sufficed in our minds 

 as an eminently satisfactory explanation of a state of affairs 

 which, at first glance, appears so anomalous. 



XVI.— THE GENERA EUBYJODONTA (WARREN) AND 

 BUZURA (WALKER). 



The genus Buzura. 



Sub-genus Buzura. Species with male antennae bipectinated. 



Buzura suppressaria (Guen.). Distribution : — North India. 



Buzura var. benescripta (Prout). Western China. 



Buzura varianaria (Swinhoe). India. 



Buzura abruptaria (Walker). Widespread around the Gulf 

 of Guinea in Africa. 



Buzura analiplaga (Warren). Hinterlands of Nigeria and 

 the Senegal. 



Sub-genus Blepharoctenia (Warren). Male antennae sub- 

 pectinate. 



Blepharoctenia thibetaria (Obthr.). Tibet, etc. 



Blepharoctenia bengalaria (Guen.). Bengal. 



Blepharoctenia contectaria (Walker), North India, 



Blepharoctenia perclara (Warren). Formosa. 



Blepharoctenia arenosa (Warren). Java. 



Blepharoctenia albescens (Warren). Java. 



Subgenus Amraica (Moore), Male antennas unipectinate. 



1918 Feb. 1. 



