/U )ARMIDAZ—ANGERONA. 345 



darker colour, with but a cloud of orange-red remaining in 

 the middle. 



In the female the antennae are simple, the thorax but 

 little thicker, but the abdomen very much so; fore wings 

 crenulated behind, pale yellowish-ochreous, dusted with 

 orange-brown in minute erect streaks ; the discal spot a 

 perpendicular orange-brown or purple-brown streak ; hind 

 wings deeply scalloped at the hind margin, similar in colour, 

 with a dull brown central spot ; cilia concolorous. 



Or — With very broad markings, similar to those in the 

 second form of the male ; the base of the fore wings to near 

 the middle and sometimes that of the hind wings purple- 

 brown, very smooth in tint, darker or paler ; and with a very 

 broad band of the same along the hind margins. 



Underside much less dusted, but in other respects, in the 

 various forms, almost an exact reproduction of the upper. 



The alternative forms above mentioned occur so much 

 together, and so constantly, that both seem to be typical of 

 the insect, though perhaps the banded females are hardly so 

 widely distributed as in the other sex, and in the Northern 

 Midlands such examples, in either sex, are very rare. 



Variation naturally surrounds these forms, but is not 

 frequent. In Mr. Sydney Webb's collection are pale orange 

 males devoid of the darker streaks and spots, or with the 

 cilia only spotted ; one, on the other hand, has the dark 

 orange perpendicular streaks so greatly developed as to 

 crowd the whole of the wings; another is striped in 

 longitudinal clouds with orange and yellow ; another has 

 the bands of the second form broad and very silky, 

 but of an excessively pale purple-brown, in which the 

 orange blotches show a singular glow of colour; in 

 another specimen the hind wings are wholly purple-brown, 

 without a trace of orange, while two others extend that 

 variation to both fore and hind wings, one being wholly silky 

 purple-brown, the other purple-drab. Most of these are 

 reared from Kentish larvae. 



