SEiaCORin.il—PENTHIXA. J59 



third white rippled with grey, a grey-brown spot below the 

 apex, and facing it a sharp white hook-mark in the margin 

 of the brown-black ai-ea. 



AntenniB dai-k brown ; pali>i, head and thorax black- 

 brown ; crest dull chestnut ; abdomen smoky brown with a 

 pale ochreous anal tuft. Fore wings unusually broad, costa 

 very strongly arched ; apex bluntly angulated ; hind margin 

 straight and nearly perpendicular; two-thirds of the area 

 from the base mottled brown-black, its outer margin oblique, 

 irregular, and excavated, a white hook-mark especially 

 penetrating it just above the middle ; at the rising of the 

 costal arch is a faint white cloud ; hinder third part of the 

 wing white, edged with squared grey dots, and containing 

 an oblique spot formed of black dots, and some parallel 

 delicate grey cloudy lines ; cilia white, clouded with grey. 

 Hind wings and their cilia smoky brown. Female similar, 

 but larger. 



Underside of the fore wings pale leaden-brown ; costa 

 toward the tip faintly dotted with white. Hind wings 

 leaden-white. 



Easily distinguished from the closely allied species by the 

 great breadth of its fore wings. 



On the wing iu -June and July. 



Larva of a beautiful transparent light green. (W. 

 Machin.) 



April and May on Halu: m^jrca, feeding in the young 

 shoots, and selecting those high upon the bush, drawing two 

 young leaves together, and being so exceedingh" lively that 

 almost at the smallest disturbance it will wriggle out and 

 fall to the ground. 



The moth sits in the higher portions of the large sallow 

 bushes, and when disturbed by the beating-stick will fall to 

 the earth with scarcely a flutter; or if the weather is warm 

 will fly down, tacking sharply from side to side. At dusk 

 it ilies vigorously about and over the same bushes, at all 



