248 LEPIDOPTERA. 



red-brown reticulated with darker ; a small cluster oi' dots of 

 raised scales on the disk before a dark red-brown triangular 

 blotch. 



Antennas, palpi, head, and thorax red-brown ; abdomen 

 silky pale yellow-brown. Fore wings not very broad, costa 

 arched, apex angulated and produced ; hind margin slightly 

 retuse ; red-brown, thickly reticulated with fine darker red- 

 brown lines ; usual first line very distiuct, and the basal and 

 second lines distinguishable among the reticulations ; on the 

 first line is a small cluster of raised scales, and smaller ones 

 are scattered on the other lines ; a faintly darker open costal 

 triangle extends two-thirds across the wing and includes a 

 black-brown discal spot ; cilia concolorous. Hind wings 

 white or dusky white. Female decidedly smaller, with 

 stouter body and narrower wings. If a little faded or worn 

 the ground colour is paler and the reticulations become 

 much more distinct. 



Underside of the fore wings light leaden-brown ; costa 

 dotted with light brown. Hind wings dusky white. 



On the wing in July and August. 



Larva not active, cylindrical, sliglitly narrower at each 

 end ; pea-green, tinged on the back with darker ; internal 

 dorsal vessel visible ; head yellowish-brown with lighter 

 brown mouth ; raised dots hardly perceptible ; plates pea- 

 green, the dorsal having the hinder margin and the anal the 

 front margin dotted with black ; feet dull green. 



Or very pale yellow or dull white with the entire dorsal 

 region dull grey ; raised spots large pale yellow ; head very 

 light brown ; plates dull pale yellow. 



Or pale yellow with the dorsal region olive-green ; raised 

 dots paler and shining ; head very pale brown ; plates and 

 legs pale yellow. 



June; on Spircen ulmaria (meadow-sweet), spinning to- 

 gether the leaves of the young shoots and feeding within, often 

 gnawing the young mid-rib so as to cause the tip of a leaf 



