438 LEPIDOPTERA. 



sprinkled along the nervures and very strongly along the 

 costa with white dots and cbuding in which are dark brown 

 atoms ; this is broken by the first line, sitnate far from the 

 base and consisting of three cloudy dark brown spots edged 

 inside distinctly with white ; second line very oblic|ae and 

 rather sinuous, but without indentations, yellowish-white, 

 edged on both sides with dark brown ; two black dots in 

 some white clouding indicate the discal spot ; hind margin 

 dotted with dark brown in a white cloud ; cilia shining grey. 

 Hind wings ample, rounded behind; shiuing smoky-brown ; 

 cilia concolorous. Female with simple anteunte, otherwise 

 similar. 



Under side of the fore wings shining dark smoke-colour, 

 blacker toward the costa, and there divided by an oblique 

 yellowish-white streak ; dorsal margin whitish. Hind 

 wings shining pale smoky-brown, with darker nervures. 

 Body pale grey-brown ; legs brown. 



On the wing in -Tuly and August. 



Larva. — Hofmann says that it lives in May upon 

 Tlujwiis scrpyUinn (wild tliymej, but gives no particulars. 

 It has hitherto eluded our search, and this may not be 

 the correct food-plant. Mr. Sydney AVebb says: "I have 

 bred it from tube-like webs found among or close to the 

 roots of cistus and thyme, especially the latter, but I made 

 no note of the appearance of the larva, and after thirty years 

 would not attempt to recall it from memory.'" 



Pupa unknown. 



This moth is almost confined, with us, to the south coast, 

 and to a few of our more southern chalk hills and downs. 

 Here it hides among the large clumps of soft grass, and the 

 short herbage of the turf, starting up when almost trodden 

 upon, to fly to a short distance. It Hies of its own will about 

 half an hour before dusk on warm evenings. It is exceed- 

 ingly local, and the only localities known to me are in Kent, 



