TRIFID.-E. 359 



one of a curious pale Hlac-grey, and another of a rich dark 

 purple-brown, much clouded and streaked with deep black, 

 and with the pale subcostal stripe cut short not far from the 

 base. 



On the wing in August and September. 



Lajiva smooth, cylindrical, slightly tapering in front, having 

 a few minute hairs on the head and body. Colour purplish- 

 brown, grey, or green, darker on the back and shaded with 

 blackish on the sides ; dorsal line whitish ; subdorsal broad, 

 white, margined above by a row of conspicuous, short, black, 

 longitudinal streaks, beneath with .reddish; having also a 

 dorsal series of diamond markings, very indistinct; spira- 

 cular stripe broad, yellowish, with a pale purplish, greenish, 

 orange, or reddish spot on each segment, and shaded beneath 

 with dark grey atoms. Head pale brown, the lobes outlined 

 with blackish ; spots and spiracles black ; undersurface pale 

 brownish or greenish-ochreous. When young the dorsal 

 line of diamonds is more distinct. (C. Fenn.) 



Dr. Riding says that the young larva is at first bluish- 

 leaden in colour and covered all over with short hairs ; the 

 head very large and brown ; the abdominal legs on the 

 seventh and eighth segments rudimentary ; and the attitude 

 of the infant larva sphinx-like, or looping as it walks. 

 After the first moult the head, which is still brown, has 

 become smaller than the next segment, which now bears a 

 small plate ; the body colour is now glaucous or pale olive- 

 green; the raised spots faintly marked, black, each with a 

 short hair ; and the abdominal legs on the eighth segment 

 better developed but still not fit for use. After the second 

 moult the head is pale brown with darker lobes and paler 

 central line ; the body dark glaucous to olive-green, in some 

 with a brownish shade ; dorsal and subdorsal lines pale and 

 distinct, especially the former ; spiracular line white, broad 

 and conspicuous, with the spiracles along its upper edge ; 

 legs brown ; prolegs pale translucent green with brown 



