PH 1 ■CITID. E—DTOR \ XTRL4. 419 



smoky-white with a brown margin. Body and legs brownish- 

 white. 



On the wing from June till August. 



Larva, when young — after the second moult — dorsal 

 surface deep heather-green, having a blackish dorsal line 

 finely edged with paler ; subdorsal line black, followed by a 

 blackish-green stripe, and beneath this by a broad spiracular 

 stripe of the colour of the back, and edged above and below 

 each hy a paler line ; head green with black markings on 

 each lobe ; dorsal plate glossy green with dark lines. 

 (W. Buckler.) 



The larvas from which this incomplete description was 

 taken were hatched from the eggs, and fed upon heather in 

 the autumn, but did not survive the winter ; and the larva 

 seems to be rarely observed here. It is said to feed from 

 August till May, on Calluna vulgaris and Urica cinerea. But 

 Herr von Hornig says that it is dark red-brown with olive- 

 coloured pale-bordered lines, and red-brown longitudinal 

 stripes, having upon the fourth segment two black spots ; 

 head round, glossy black ; dorsal plate similar, large. Upon 

 Poll/gala chamccbioxiis, singly, close to the earth, in a slight 

 web upon the stems; and Herr Anton Schmid says upon 

 Thymus among the lower shoots ; by which one is tempted 

 to believe that its history is not perfectly known on the 

 Continent either ! 



Pupa apparently undescribed — in a thick white cocoon in 

 the earth. 



This moth is found with us only upon heaths, and seems 

 always to sit upon the heather. Since Polygala mdgaris often 

 grows among heather it is possible that it may sometimes 

 serve this species as a food-plant, but all experience seems 

 to point to the heather (Calhina) or one of the other common 

 heaths {Erica). Yet it is singular that the larva should be 

 so difficult to obtain. The moth is not very local, occurring- 



