LARENTID.-E—THERA. 359 



Larva stout, smooth, velvety ; head roimded, rather large, 

 yellowish-brown ; two minute points project from the anal 

 segment ; colour of body grass-green ; dorsal stripe broad, 

 pale blue, divided by an indistinct greenish or greyish shade, 

 subdorsal stripes conspicuously yellowish- white, sometimes 

 pure white ; spiracular stripes narrower, white, edged above 

 with dark purplish-red, but this edging is sometimes absent ; 

 legs pink ; prolegs green. 



The subdorsal and spiracular stripes are frequently tinged 

 with pale yellow, and often of a fine silvery white. (Chas. 

 Fenn.j 



April till June or even July ; on juniper ; extremely 

 sluggish, feeding principally at night, and difficult to find 

 on so intractable a food plant. 



The winter appears to be passed in the egg state. 



Pupa smooth and delicate, with very thin skin ; wing- and 

 limb-covers moderately glossy, but covered with excessively 

 minute sculpture of irregular raised lines ; dorsal and ab- 

 dominal regions more dull from abundance of minute 

 regular pitting ; hind baud of each segment sharply defined 

 and smoothed round ; anal segment on the dorsal portion 

 ridged and thickened into a broad conical cremaster, hollowed 

 beneath and finished off with a strong spike surrounded with 

 hooked bristles ; dark green with the spiracles and cremaster 

 brown. In a slight cocoon among moss or the fallen juniper 

 leaves. 



So far as I know the moth is hardly ever to be seen in the 

 daytime. It hides in juniper bushes and is sluggish. Mr. 

 Ilobson tells me that it has at times been beaten out, but 

 usually would fall to the ground and there sit quivering 

 its wings ; occasionally it would come out and fly to a 

 very short distance to hide itself ; towards dusk it was more 

 active, and would fly quite away. Doubtless it may be col- 

 lected at night without difficulty by the aid of a lantern, but 

 its home is so generally on some wild hill or mountain side or 



