Explanation of Plate X. 



Photographs (by A. E. Tonge, Esq.) of under-sides of 



1. Erebia lefebvrei, ^. 



2. ,, melas, ^ . x ^. 



They show, as Plates VIII and IX, that the apical ocelli are much 

 nearer the hind margin in lefehirei than in melas, and that in the 

 former the pale band on the hind-wing can just be made out, in the 

 latter much more distinct. 



