TRIFID&. 87 



with brown ; nervnres all darker grey and blackened toward 

 the tips; from the middle of the base a long and very thin 

 black line lies below the median nervure, and another, shorter, 

 close to the dorsal margin; first line grey-black hardly 

 noticeable from being disposed in oblique lines forming 

 angles so long that they reach the middle of the wing ; 

 second line of the same colour, only just perceptible, and dis- 

 posed in disconnected curves between the ner.ures ; toward 

 the hind margin are two thin black lines lying between ner- 

 vnres, one above the anal angle, the other above the middle ; 

 places of the orbicular and reniform stigmata, or the reniiorm 

 only, just indicated by a rather paler grey or brownish-grey 

 unmargined cloudy spot, but very frequently these ^and a 

 other markings in the middle are obscured by smoky-b ack 

 clouding; cilia grey divided by darker ^shes proceeding 

 from the nervnres. Hind wings rather narrow with the hind 

 margin sinuous; pale smoky-grey with an obscure hinder 

 band of darker grey-brown ; nervnres dark brown ; cilia 

 white. Female similar but with darker hmd wings and 



stouter body. A 



Underside of the fore wings dark smoky-grey, costa and 

 hind margin paler grey. Hind wings smoky-white dusted 

 along the costal area and clouded behind with grey-brown ; 

 nervnres darker. Body and leg-tufts very pale purplish-drab ; 

 tibia? grey barred with brown. 



Variable in depth of colour, especially m the intensity of 

 the central clouding of the fore wings, which in some speci- 

 mens is sooty-black, and graduates in every shade to the 

 normal smoky-grey, and to paler; occasional examples being 

 rather pale dull grey with all the nervnres visibly darker 

 and having brownish dashes between them toward the hinder 



area. 



ea. 



On the wing at the end of April and in May, or occasion- 

 ally June. In the year 1856 several were captured a 

 Plymouth even in July. On the other hand the very small 

 amount of protection obtained by keeping it in a cold portion 



