MARBLED WHITE. 35 



margins, the third from the outer corner not having an eye, 

 and thfe eye near the inner corner being a double one. The 

 black markings are irrorated with buff. 



The female is of considerably larger size than the male, and 

 the under surface of the wings is of a yellower hue. 



Varieties occur, both accidental ones, and others that seem 

 to be permanent; some are quite of a cream yellow on the uj^per 

 side; others milk white. 



One taken near Dover, recorded by the Rev. W. T. I>rce, in 

 the "Magazine of Natural History," vol. 5, page 335, and which 

 is figured in the plate, is described as having the upper wings 

 nearly black, except a large white spot near the base, and 

 another divided into three by the veins at the lower edge of 

 the middle part of the fore wings. Underneath, all the wings 

 arc clouded with black, and almost entirely Avithout the usual 

 tesselated markings. 



In some the black is much suffused over the gi'cater portion 

 of the wings. 



In others the black colour is changed into yellowish brown. 



Another local variety has the black markings on the under 

 side of the hind wings exchanged for a very light buff, so 

 that the wings appear nearly white, and without the eyes. 



The caterpillar is yellowish green, Avith a darker line down 

 the back and on each side. 



The figures, excepting the one of the variety, arc from speci- 

 mens in my own collection. 



