BOARMID^—BOARMIA. 205 



white and devoid of dark dusting. Such are in several of 

 the best collections. In that of Mr. S. J. Capper are two 

 specimens, from the same rich locality, of a dusky-white 

 colour devoid of the transverse stripes, except some blackish 

 dashes on the nervures ; also one unicolorous black male 

 without markings, except that the nervures are of a deeper 

 black. In Mr. R. Adkin's collection is a specimen from the 

 South of Ireland, abundantly suffused with dark dusting, but 

 having the borders of the wings broadly black ; and a num- 

 ber of specimens of both sexes, reared by Mr. B. A. Bower, 

 have the double first line and the whole hinder space from 

 the second line rich velvety black, clouded off at the edges 

 of the markings, and the ground colour in the middle of the 

 wings white. One also in the Rev. J. Greene's collection is 

 black from the base to the first line, and from the second 

 line outwards, but with the central band brightly white. 

 On the wing from the end of April till June, 



Larva one and a half inch long, moderately slender, nearly 

 of uniform thickness when viewed from above, but when 

 viewed sideways seen to taper a little from the tenth segment 

 in each direction ; head rather wider at the mouth than at 

 the back ; skin soft and smooth ; general colour a Hght and 

 delicate green, the head the lightest portion, and rather pink 

 at the mouth ; ocelli black ; dorsal region much lighter than 

 the sides and undersurface, from the number and closeness of 

 pale longitudinal lines, which are only relieved by fine thread- 

 like edges of the green ground ; dorsal line rather bluish- 

 green, darkest near each segmental division, and having an 

 exceedingly fine, ragged, greenish-white central thread ; close 

 on either side of it is a ragged-edged yellowish-white or pale 

 yellow line, followed closely byanother, less light or fainter, and 

 again by another ragged-edged whitish subdorsal line ; these 

 are each defined by a fine thread of green edging, and are 

 relieved below by a wide line of rather darker bluish-green, 

 having a very fine ragged paler thread running through it ; 



