P YRA US TID^—P \ 'RA US TA. 169 



Variable in the size of the sub-apical orange s]iot of the 

 fore wings, and in the breadth of the orange-yellow band of 

 the hind ; occasionally a yellow cloudy shade is visible at 

 the base of these last. This variation seems to become the 

 permanent form in some parts of the South of Europe and 

 in Palestine. In the collection of the late Mr. F. Bond, 

 now in the possession of Mr. Sydney Webb, is a specimen 

 having the fore wings black-brown, and the hind black, both 

 unicolorous, and another in which the fore wings only are 

 devoid of markings. 



On the wing in Maj' and June, and, as a second generation, 

 in July and August. 



Larva a little over five-eighths of an inch in length, 

 stoutest at segments eight, nine, and ten ; thence tapering 

 rapidlj' to the tail, more gradually to the head, which is the 

 smallest segment; colour dull green on the back; dorsal line 

 the same, only marked off by edgings of yellow ; spiracular 

 stripe broad and more yellowish, with a faint green line 

 running through it ; head and second segment pale brown, 

 freckled with black ; below the spiracles is a double greenish 

 line ; undersurface pale yellow ; all the usual dots distinct, 

 shining black, and narrowly ringed with yellow. When full 

 fed it becomes tinged with pink. There is a variety wholly 

 pale green with no darker stripes or lines ; and another which 

 has a pale yellow blotch on the back of the twelfth and 

 thirteenth segments. (Rev. J. Hellins.) 



September and October — and probably another generation 

 in June or July — on Kcpetu cataria, Orifjanuiii vulgarc, 

 some of the species of Mentha^ and on Thynms serpyllum ; 

 feeding on the flowers, under a covering of confused silken 

 threads. When quite young feeding on the undersiirface of 

 the leaves. 



Pupa cylindrical, slender, the abdomen ending in a 

 flattened, blunt projection, beset at right angles with some 



