42 LEPIDOPTERA. 



Pusillata. Long, slender, and tapering considerably 

 towards the head. Ground-colour orange-red or dull ochre- 

 ous-green. Central dorsal line dusky olive, often only 

 apparent on the anterior segments. Sub-dorsal lines the 

 same colour. Spiracular line yellow. Segmental divisions 

 orange. Central ventral line yellowish. 



The above description was taken from larvae reared from 

 eggs kindly sent me by Mr. M^Lachlan. They fed on 

 spruce fir, and were full fed the first week in July. Pupa 

 enclosed in a slight earthen cocoon ; slender and delicate ; 

 pale ochreous yellow; eyes black and prominent; upper edge 

 of wing-cases bordered with two black spots, lower edge by 

 a slender blackish line. 



Distinctata. Rather long and slender, tapering con- 

 siderably towards the head. Ground-colour dark green. 

 Central dorsal line broad, purplish-red. Spiracular line 

 indistinct, greenish-yellow. Skin wrinkled. Back studded 

 with numerous very short, stiff, bristly hairs. Down the 

 centre of the belly a whitish line. Ventral segmental divi- 

 sions yellowish. 



I have taken this larva in Derbyshire and Bucks, feeding 

 on flowers of Thymus Serpyllum in August. Pupa yellow- 

 ish-green and olive enclosed in a slight ear^ien cocoon. 



Suhfulvata. Var. 1. Reddish-brown. Central dorsal 

 line pale olive, connecting a series of perfectly oval, dusky- 

 oUve blotches, which become confluent on the anterior and 

 posterior segments. Sub-dorsal lines blackish, interrupted; 

 dark opposite the dorsal blotches, pale and almost, if not 

 quite, evanescent between them. Median dorsal blotches 

 pale in the centre, very close together, almost confluent. 

 Spiracular line white. Back thickly studded with minute 

 white tubercles, and less thickly whitish hairs. Belly 

 whitish, with a purplish central line. 



