NO TODONTID^. 1 47 



with the hind margin more deeply scalloped ; more uniformly 

 brownish in colour ; otherwise similar. 



Underside of fore wings whity-brown clouded with grey ; 

 costa blackish at the base and spotted with black beyond the 

 middle, where also is a pale transverse angulated stripe; 

 hind wings whitish with a black central spot, dark lines on 

 the nervures, and dark dashes along the hind margin ; body 

 and legs whity-brown. 



Not very variable, slightly so in the intensity of the few 

 dark markings, the oblique stripe being in some cases obsolete 

 in both sexes. Mr. Harwood of Colchester, however, records 

 a specimen nearly black. 



On the wing in May and June, and as a partial or complete 

 second generation in July and August. 



Larva rather stiff in appearance, nearly cylindrical and 

 without prominences, tapering a very little from the eighth 

 segment to the head, which is small, greenish or brownish- 

 green, and edged with white. Skin rather granulated, 

 especially on the usual dorsal and subdorsal lines; general 

 colour pale bluish-green, or whitish-green, whitest on the 

 back ; dorsal line indicated by an edging of dull white on 

 each side ; subdorsal lines whiter, spiracular yellow, some- 

 times interrupted with white, slightly edged above with black, 

 and enclosing small lilac or purple spots on the front 

 segments ; legs green ; undersurface dark green irrorated 

 with whitish. This larva has, very conspicuously developed, 

 a remarkable gland beneath the head, from which it is able 

 to protrude a forked projection. There is neither time nor 

 space here to enlarge upon this curious organ ; indeed it is 

 not in my power to do justice to much that is wonderful in 

 the structure of these creatures, but throat-glands of this 

 nature, though not usually so strongly developed, exist in the 

 larvEe of a large number of species of the present family, and 

 in a very great majority of those of the Noduina. 



End of June, July, September, and October on all the 



