I70 LEPIDOPTERA. 



this on the costa commences another dark-brown line which 

 proceeds obliquely to the hind margin near the anal angle, 

 cutting off a large paler apical space ; another shorter brown 

 line from the dorsal margin runs parallel with the first for a 

 short distance, then turns to the hind margin and cuts off a 

 pale space at the anal angle ; the central portion between 

 these three lines forms a broad hatchet-shaped central band, 

 usually of a darker brown than the rest of the wing; cilia 

 dark brown, dashed with paler. Hind wings dark pui*plish- 

 brown or blackish-brown, with the dorsal margin ochreous, 

 and the cilia dark brown faintly dashed with paler. Female 

 similar in size, shape, and markings, but pale brownish ochre- 

 ous, with the lines brownish and without the brown clouding 

 and central band ; margins rather browner ; cilia brown, tipped 

 with whitish. ' 



Under side yellowish ochreous, with a golden tinge, the 

 middle portion of the fore wings in the male occupied by a 

 large ill-defined dark-brown cloud. 



Not very variable, but the male is sometimes almost entirely 

 suffused with rich dark brown. Decidedly smaller here than 

 is usual in specimens from the Continent. 



On the wing in the last week of June and to the middle of 

 July. 



Larva with six legs only ; prolegs replaced by a formation 

 of the under surface which allows it to cling closely to a leaf, 

 on which it leaves a shining track like that of a snail. Oval, 

 onisciform, sides deeply indented and hollowed below the 

 subdorsal and dorsal region, which forms a broad raised belt in 

 the middle of the back; head small, shining, retractile, con- 

 cealed under the second segment, which is also retractile. 

 Bright emerald-green or pea-green ; subdorsal lines waved, 

 conspicuous, primrose-yellow, edged above with a deep violet 

 spot at each incision ; a row of small diamond-shaped yellowish 

 dorsal spots placed at the incisions, and almost united; between 

 them and the subdorsal line is a row of yellow spots, not at 



