1 68 LEPIDOPTERA. 



brown, with the blotch of deeper colour ; the third pale drab 

 dusted with darker atoms, and with the chocolate blotch 

 paler toward the apex. A most beautiful variety in the 

 collection of Mr. Sydney Webb is blackish-brown tinged 

 with reddish, having the three transverse lines very distinctly 

 yellowish-white, and the blotch of a deep mahogany colour. 

 Mr. A. B. Farn has a gynandrous example — the right side 

 male, the left female. 



On the wing at the end of April and in May, July or 

 August, and sometimes in a third generation in September 

 or October. 



Larva. — Head rounded ; body nearly cylindrical but a little 

 flattened and the segments rather deeply divided ; on the 

 back of the fourth and twelfth segments is a slightly raised, 

 round, blackish-brown knob, or tubercle ; body covered with 

 slender bristles or hairs, in loose open tufts arising from 

 yellowish or orange spots on the sides. Head brown or 

 blackish, body pale grey dotted with black, with a very broad 

 wavy dorsal stripe composed of four narrow parallel lines : 

 spiracular stripe also very broad, consisting of a row of large 

 yellow spots in which are pairs of orange warts ; legs black ; 

 Tinder-surface and prolegs smoky-grey. 



June, July, August, September, sometimes November, on 

 aspen, poplar, willow, and sallow, drawing together two 

 leaves with silk into a habitation in which it lives ; coming 

 out at night to feed, clearing off all the leaves close to its 

 habitation before it will remove and form a fresh one ; feeding 

 up very rapidly, and appearing in two or three generations. 



Pupa reddish-brown, said to resemble that of Callimorpha 

 dominula, though smaller. In a silken cocoon in the larval 

 habitation, the leaves spun very tightly together while upon 

 the tree, and, in the late brood, falling with them to the 

 ground. In this condition through the winter. 



The moth flies at night, and is very rarely captured on the 



