36 LEPIDOPTERA. 



dots; cilia grey dashed with darker. Hind wings smoky- 

 grey with a yellowish sheen ; nervures rather browner ; cilia 

 white. Female very similar. 



Underside of the fore wings smoky yellowish-white, pearly- 

 white along the dorsal margin ; discal cell filled with long 

 prostrate hair-scales. Hind wings yellowish-white, tinged 

 along the costal margin with yellowish-brown ; central spot 

 very small and faint, smoky-black, followed by a faint slender 

 similar transverse stripe. Body yellowish-brown ; legs and 

 leg-tufts purple-brown. 



Variable in the shade of grey, in the brightness of the 

 light rounded clouds, and in the blackness of their margins. 

 The very few specimens hitherto seen here are not of the 

 brighter forms but app roach in some degree to the more 

 slate-grey variety known as var. somniculosa. 



On the wing in September and October. 



Larva bluish-green with five white longitudinal lines ; 

 spiracles yellowish, edged with brown ; undersurface and 

 feet pale green, the latter with the clasping-surfaces 

 ochreous-yellow ; head and dorsal shield pale yellow-brown ; 

 raised dots indistinct. Or, blue-green besprinkled with small 

 white dots ; having three white longitudinal lines on the 

 back, and on the sides a yellow longitudinal stripe in which 

 are placed the black-bordered, white spiracles. Head in 

 both varieties green with two white dots, but in the first the 

 mouth is yellow. (Hofmann.) 



April till June on sallow, whortleberry, and sweet-gale, 

 usually in wet or marshy situations. 



Pupa ochreous-yellow, in a cocoon among marsh moss. 

 Not more fully described. 



Little or nothing is known in this country of the habits of 

 this exceedingly rare moth. It has been taken, sitting on 

 the trunks of trees, in the daytime, and at sugar at night. 

 The first specimen noticed here was found sitting low down 

 on the trunk of a tree somewhere on the Lewisham side of 



