70 LEl'IDOPTERA. 



Underside of the fore wings shining, pale smoky-grey ;; 

 discal spot dull black ; on either side of it is a dull black costal 

 streak, and beyond a longer costal blotch ; from two of these 

 obscurely black stripes cross the wing ; cilia prettily laced with 

 black basal crescents. Hind wings dusky -white ; central spot 

 black ; followed by two curved transverse stripes of black 

 dots on nervures. Body and legs brownish-grej-. 



Onl}^ a little variable in the distinctness of the tranverse 

 markings. Sir Thomas Moncrieffe states that freshly emerged 

 specimens often have quite a rosy patch in the middle 

 of the fore wings, but that it rapidly fades away. A speci- 

 men taken near Derby, in the collection of Mr. J. Hill, is pale 

 grey with a dark band round the hind margin ofevery wing. 



On the wing in May and the eai'lj" part of J une. 



Larva long and rather slender, tapering toward the head ; 

 which is small, dark green ; general colour bright grass- 

 green, somewhat darker on the middle of the back ; dorsal 

 line dark green, but its anal tips reddish, sub-dorsal lines 

 vifanting, or so faint as to be scarcely visible ; spiracular line 

 whitish or pale straw colour ; segmental divisions yellowish ; 

 undersurface whitish, with a dark green central line. 



Or — Head and ground colour yellowish-red or reddish- 

 buff ; dorsal line brownish-olive, occasionally very faint ; 

 spiracular line pale greenish-yellow ; anal tip of the dorsal 

 line reddish ; undersurface whitish with a dusky central and 

 two broad blue lateral lines. (Rev. H. H. Crewe.) 



End of June, and in July, on larch (Piims lario:), in con- 

 finement feeding also upon spruce fir. 



Pupa rather long and slender ; thorax yellowish-olive ; wing 

 cases deep green ; abdomen yellowish-green, tinged with red; 

 abdominal divisions and anal tip red. In a slight earthen 

 cocoon in the ground. (Rev. H. H. C.) 



The moth hides during the day in the branches or sometimes 

 on the trunks of larch trees, or on the undersides of boughs ; in 

 windy weather hiding in the thickest portions. When beaten 



