36 LEPIDOPTERA. 



white ; subdorsal lines shaded above with ochreous and com- 

 posed of a series of broad, slightly oblique black dashes, also 

 emitting a grey shade to the dorsal line on each segment, so 

 as to form an indistinct prostrate V, the apex behind ; usual 

 dots whitish or yellowish, most distinct along the subdorsal 

 line ; on the twelfth segment is an ochreous blotch, containing 

 a black spot on the subdorsal line ; spiracular line broad, 

 ■ochreous, conspicuously so at each extremity, but tinged with 

 reddish-purple in the middle ; undersurface pale purple ; 

 spiracles white or pale ochreous ; legs and prolegs dull pink 

 or reddish-brown. (C. Fenn.) Mr. Buckler says that the 

 colour varies from rich dark brown to chestnut, ochreous, and 

 orange-browns ; and that the yellow spiracular stripe is pale 

 ochreous or cream colour, blending off in the middle to grey- 

 brown ; also that " the sides of these velvety-looking creatures 

 are clothed with an excessively fine and soft pubescence, 

 which more or less includes the ventral prolegs, and assumes 

 the most delicate tints of bright azure, according to the angle 

 of reflected light in which they are seen." 



July to September or October, on sallow, bramble, rasp- 

 berry, violet, knotgrass and bearberry (Arhithis uva-ursi), 

 becoming at this time quite full-fed, then forming a slight 

 hybernaculum of semi-transparent silk, covered with rubbish, 

 on the surface of the ground or in some other convenient 

 spot, and remaining coiled therein till March or April, by 

 which time it has shrunk considerably in size ; but though it 

 quits its hybernaculum it does not feed at that time but retires 

 to the earth for pupation, which takes place early in May. 



l^urA rather elongate ; anal extremity blunt, with a small 

 hooked bristle. Very deep purple ; incisions paler. In a 

 slight cocoon of silk and sand or rubbish on the surface of 

 the ground or immediately beneath. (C. Fenn.) 



A northern species, principally frequenting woods, but 

 rather uncertain — sometimes moderately common in one 

 year and hardly to be found for the next two or three. 



