BOARMID^—BOARMIA. 201 



replaced by short disconnected cross daslies; and another 

 suffused with ochreous and grey ; in that of Mr, Percy Bright 

 is a white female wholly irrorated with grey dots, the usual 

 markings along the hind margins alone being visible. On 

 the other hand, Mr. Sydney Webb has specimens suffused 

 with dark grey, two, in Mr. Bond's collection, smoky-black, 

 and a single example sooty-black ; but it does not, as yet, 

 a})pear that a black race of this species has been set up in 

 these Islands. 



On the wing from the end of May till July. Very rarely 

 casual specimens have been taken in September, probably of 

 a second generation, though it is not certain whether in this 

 species emergence is not sometimes deferred. 



Larva twig-like, stout, with two large dorsal protuberances 

 on the sixth segment, two points on the twelfth, and small 

 lateral warts on the seventh, eighth, and ninth ; flap of the 

 anal segment bifid, and under it two projecting points ; head 

 dull brown, the face slightly paler, mouth shining, with a 

 projecting point on each side ; body ochreous, variegated 

 with red, black and brown ; protuberances on the sixth seg- 

 ment purple; points on the twelfth black; undersurface 

 purplish-brown with three ill-defined dull orange-ochreous 

 longitudinal stripes, the middle one broadest; spots dull 

 black; spiracles whitish, edged with black. 



Or — Head yellowish-brown, body uniform pale whitish- 

 green, the protuberances on the sixth segment and the points 

 on the twelfth yellowish-brown; spiracles white, distinctly 

 edged with black ; incisions of segments and hinder extremity 

 tinged with yellow. 



This last is the usual form in the young larva, occasional 

 in the adult. (C. Fenn.) 



Mr. G. T. Porritt describes further variations : 



Ground colour pale glaucous-green, with a darker green 

 dorsal line; humps on the sixth segment chocolate; those 

 on the twelfth paler brown; anal segment and prolegs 



