LARGE WHITE. 19 



— a singularly small specimen in my own collection, figured 

 in the plate, measm-es under two inches across. The upi^er 

 surface of all the wings is white, the fore ones having a broad 

 black patch folloAving the angles of the outside corner, and 

 indented on its lower inner edge. There is a pale blackish 

 grey margin at the front of the wings, extending nearly to the 

 patch at the corner; and the whole front edge has a line of 

 black along it. Occasionally, but very rarely, the males have 

 a black spot on the fore wings: the hind wings have a black 

 spot on the middle of their front edge. Underneath, there are 

 two black spots on the fore Avings, which however are inde- 

 pendent of any generally apparent corresponding markings on 

 the upper side. The hind wings are dull yellow, minutely 

 dotted all over with black specks. There is only a faint trace 

 of the black mark on the middle of the front edije. 



The female has the outside patch larger than in the male, 

 with its inner edge more or less deeply indented. There are 

 also two large irregular round black spots on the middle of the 

 fore wings, and immediately beneath them a streak of the same 

 running along the lower edge of the wing, and attenuating 

 towards tlic body. The hind wings have a triangular-shaped 

 spot on their front side in a line with the spots on the fore 

 wings. Underneath, the fore wings shew the black spots plainly 

 through, and the black patch very faintly. The hind wings are 

 of a dull greenish colour, dotted all over with very minute black 

 spots, and shewing the black triangular patch rather obscurely 

 through. 



The eggs are deposited in clusters. 



The caterpillar is greenish yellow, the segments being almost 

 covered with black tubercles of different sizes, from each side 

 of which arise white hairs, three of the larger ones forming a 

 triangle. The head, fore legs, and hind segment are also black. 

 There is a line of green down each side, and one along the 

 back. 



The chrysalis is pale green, spotted with black, and with three 

 yellow lines. 



Varieties occur both in size and markings. A very remark- 



