THE SUB- ANGLED WAVE. 127 



The long, slender, and roughened caterpillar is pale greyish 

 brown ; the central line along the back is greyish-white, each 

 side edged on the hinder half with brown, having at the begin- 

 ning of each ring after the third a black dot on either side ; 

 side stripes dark brown, inclining to black above ; a slender 

 brown line below the black spiracles. (Adapted from Barrett.) 

 It feeds from August to May on Hng {Calluna vulgaris)^ 

 marjoram, thyme, knotgrass, etc. 



From eggs laid on July i and 2 caterpillars hatched on 

 July 17 and 18. These were placed on leaves of ribwort 

 plantain {Plantago lanceolata\ and as soon as large enough 

 transferred to a potted plant, and kept out of doors. Two 

 of the caterpillars grew up quickly, and on August 24 were 

 taken indoors, where they spun up for pupation, one on 

 August 28, and the other on September i. A female moth 

 emerged September 14 from the first chrysalis (F. C. 

 Woodbridge, 1906). 



The range abroad extends to East Siberia and Amurland. 



The Sub-angled Wave {Addalia {Leptomeris) strigilarid). 



This species is greyish white, sometimes brownish-tinged ; 

 dusky cross markings, of which the oblique shade following 

 the central black dot of the fore wings, and that before the 

 central black dot of the hind wings, are usually most distinct, 

 forming a narrow band across both pairs of wings ; the outer 

 margin of the hind wings is angled- 



The long, slender caterpillar has a roughened appearance ; 

 the colour is greenish grey, and the markings comprise a dull 

 green line along the middle of the back, spotted with black on 

 each side ; the grey head is variegated with very pale brown. 

 (Adapted from Porritt.) 



This species (Plate 49, Fig. 8) was known to Haworth, who 

 gave it the English name which it bears to-day. Stephens, 



