80 



one wing. Twelve specimens have this spot represented as a tiny 

 black point, whilst quite 90 per cent, of the British males and 50 

 per cent, of the Continental males have it ocellated, the possession 

 of the double ocellated spot and the ocellated spot in section 5 

 being quite characteristic. Usually the fourth ocellated spot deve- 

 loped is in section 4. It may occur only as a black point or 

 become a large ocellus. It is very rare among males of British 

 origin. Only half a dozen specimens out of my British males possess 

 it in any form, and it does not occur at all among the males from 

 Mentlel. In the males from Cortina it is frequent, whilst it is 

 exceptional for it not to be present in the males from Bregenz, 

 Among the females I have only two from Galashiels that possess it, 

 the remainder having but three spots, whilst a whole row of males and 

 females from Rannoch and the females from Forres are without ; 

 this, however, is probably due to my only possessing a short series 

 (from Forres), for two males from Forres show traces of it. All the 

 Arran females that I have possess it, and almost 50 per cent, of the 

 females from Coulport. It is quite exceptional for the females from 

 the Val d'Ampezzo to be without it ; in only three of the Bregenz 

 females is it lacking, and one of these has the spot in the 6th section 

 developed. 



The fifth ocellated spot developed usually falls in the sixth section. 

 One female from Galashiels, one male from Forres, two females from 

 Arran, one female from Coulport, three females from Bregenz, one 

 female from Gais (but not a single specimen from the Val d'Ampezzo), 

 possess this spot, although some develop the sixth spot in series in 

 section i. Owing to the nearness of the nervures between which 

 the topmost ocellus must fall, we find it always very small in size, 

 and usually placed closely above the twin spots in sections 2 and 3. 

 This topmost spot is found in no British specimen that I at present 

 possess, but it occurs in one male specimen from Bregenz, one female 

 specimen from Mendel Pass, six female specimens from the Val 

 d'Ampezzo, and one male specimen from Gais. In no single case 

 do the specimens that possess this spot in section i possess the spot 

 in section 6. I need scarcely call attention to an analogous spot in 

 Pararge inegccra and other British species The last spot that can 

 possibly be developed is in the seventh section. One female speci- 

 men from Arran possesses this as a small ocellated spot touching 

 the one in the sixth section. I find no trace of it in any other 

 specimen. 



No specimen possesses all seven spots. The female from Arran 

 just referred to possesses six, those in sections 2, 3, 4, 5, 6, 7. 

 Many possess five spots, which may be either those in sections i, 2, 

 3, 4, 5, or those in 2, 3, 4, 5, 6, the former, so far as my specimens 

 go, being almost entirely a Continental formula, the latter both 

 Continental and British. Male specimens possessing either of these 

 formulae are exceedingly rare. 



The size of the ocelli vary much. The possession of two small 



