12 LF.PinOPTERA. 



smok\--browu or hlack clot ; above the anal angle commences 

 a series, or douljle series, of smoky-brown clouds or cloudy 

 dots, sometimes proceeding to the apex of the wing, more 

 i'rec[ueiitly disappearing at the middle of the hind margin, 

 usually enclosing a very slender, much-scalloped white sub- 

 terminal Hue ; e.\treme hind margin dotted with smokj-- 

 black ; cilia brownish-white. Hind wings broad and almost 

 rounded behind, but the hind margin is a little sinuous; 

 first and second lines and central dot as in the fore wings, 

 and outside the second line is a much nioi'c taint and obscure 

 double series of smoky clouds ; extreme hind margin dotted 

 with smoky-brown ; cilia white. Female similar but with 

 threadlike antenna?. 



Underside of the fore wings clouded with smoky-black, 

 except the nervures, which are white; the discal s])ot, the 

 second line, and the double series of clouds beyond it, all 

 reproduced, pale smoky-black. Hind wings white, but with 

 all the markings similarly reproduced in smoky-black. 

 Body and legs whitish-brown ; in the male is a long tuft of 

 hair-scales on the tibia? of the third pair of legs, the tarsi of 

 this jiair shortened and apjjarently useless, but laid closely 

 against the body. 



There is considerable variation in this species in the cloud- 

 ing of the hinder area of the wings; usually it gives the 

 impression of a blotch above the anal angle, but often there 

 is a break in the middle with the clouding more distinct 

 toward tlie apex, or the latter almost ceases at one-tliird 

 the distance from tlie anal angle, and in not rare instances 

 there is hardly a trace of clouding except a faint spotting 

 over the anal angle. In the North of Ireland the female 

 is sometimes very white. 



On the wing in June and -luly, .and in the north in 

 August. 



L.MiV.v elongated, moderately slender, flattened, tapering 

 toward the head, skin rugose, raised into a ridge along the 



