157 



ACIDALIA TRIGEMINARIA. 

 TREBLE BROWN SPOT. 

 Plate XXIII. Figure 11. 



THIS insect measures a little over three quarters of an 

 inch in expanse. 



Male: fore wings dull whitish-yellow, dark grey at the 

 inner corner. The second line is dark grey and waved, 

 followed by a dark band of grey interrupted above the 

 middle; central line indistinct; central spot black. Hind 

 wings sometimes plain, but sometimes with a dusky 

 streak within the margin. 



Localities for this species are Bristol, Tenterden, Exeter, 

 Darenth Wood, Lyndhurst, Pembury, Ipswich, Renfrew. 



The perfect insect appears in July. 



ACIUALIA CONTIGUARIA. 

 Plate XXIII. Figure 12. 



THIS insect measures a little over three quarters of 

 an inch across. 



Male: fore wings pale greyish. The first line is dark 

 brown; second line dark brown and waved; central line 

 brown; central spot black. 



Localities for this species are near Conway, North 

 Wales. 



The perfect insect appears in July. 



