90 I.RPIDOPTERA. 



apex sbarply but shortly angulatecl ; hiud margin u.^arly 

 perpendicular and straight, but curved off at the anal angle ; 

 pale yellow-brown with bronzy-brown lines along some of the 

 nervures ; longitudinal pearly white stripe broad and short, 

 in contact with the costa for half its length ; obliquely 

 intersected by a faint shade of yellow-brown, wedge-shaped 

 at the tij) ; obliquely cut off from it by a narrow brown line 

 is an elongated pearly white blotch or continuation ; above 

 this is a smaller similar spot on the costa, followed by an 

 oblique white line which is continued, with a blunt angle, as 

 the transverse line, but less distinctly white ; beyond is an 

 ajjical triangular white spot, cut off by a short black mar- 

 ginal line, beneath which is a line of black dots ; cilia 

 shining white, shaded with pale brown. Hind wings also 

 short and broad, fully rounded behind, silky white ; cilia 

 white. Female similar, or with more white in the ground 

 colour, and often having a white stripe along the dorsal 

 margin. 



Underside of the fore wings shining smoky brown with 

 the hind margin whiter. Hind wings white, shaded in the 

 middle with smoky brown. Body and legs pale brown. 



On the wing from the end of June till August. 



Larva and I'ipa unknown. 



This species frequents the borders of the wettest bogs and 

 marshes — places in which the sundew and the bog asphodel 

 will grow freely — and is very local, sometimes confined to a 

 spot a few square yards in extent. It hides among short 

 rough grass, in the heather, or even upon the Sphagnum 

 which grows in such places ; also it abounds in some portions 

 of the fens. It flies readily in the afternoon if disturbed, 

 and at sunset becomes very restless and lively, flying very 

 near the ground, but conspicuous from the whiteness of its 

 hind wings. Found in such places as I have described in 

 Kent, Surrey, Hants, Dorset, Devon, Norfolk, Suffolk, Cam- 

 bridgeshire, Gloucestershire and Herefordshire ; also in 



