^6 LEPIDOPTERA. 



liiud wiugb wei'e obscured by a tliiu coat of Hour, lu this aud 

 in all cases the colour of the thorax agrees with that of the 

 fore vviugs, but in the dark umbreous and purplish black 

 forms there is usually an augulated black edging to the back 

 of the collar. Rarely individuals no lai-ger in expanse than 

 T. orbona or T. subset] ua, are met with, these have also 

 rather pale hind wings, but are instantly recognisable by 

 their shape, and the absence of the discal spot in the hind 

 wings, A curious specimen taken in Derbyshire by Mr. F. 

 0. Woodforde, has the fore wing on one side dark brown, and 

 that on the other pale slate-grey, aud what is more singular, 

 its thorax is equally divided down the middle into the same 

 two shades. Shetland examples are often of a bluish-grey or 

 whitish-grey tint. A most interesting specimen, taken near 

 Doucaster by Dr. H. H. Corbett, has a distinct row of black 

 spots, some of them wedge-shaped, from the subapical black 

 triangle to the dorsal margin. 



On the wing in June and July ; and casual specimens of a 

 partial second generation have been captured in September 

 aud October. In confinement others have been reared in 

 December. 



Larva stout, slightly thickened behind; head small, 

 rounded, shining, reddish-brown, with a black dash on the 

 face, and another on the inside edge of each lobe. General 

 colour of the body some shade of dingy brown, purplish, 

 oclu'eous, or pale or dull green, the back and sides shaded 

 with darker ; uudersurface conspicuously paler ; dorsal and 

 subdorsal lines paler than the ground colour, sometimes 

 oclireous, the former indistinct ; a series of very conspicuous 

 blackish longitudinal dashes, one on each segment from the 

 third to the eleventh, margins the upper edge of the sub- 

 dorsal line ; spiracles black, situated at the termination of 

 dark grey shades ; no spiracular line, the colour of the uuder- 

 surface extending to the spiracles, the sides below which are 

 sometimes tinged with pink, green, or yellow ; lugs tinged 



