M ABB LED WHITE. 31 



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

 under surface of the wings is of a yellow hue. 



Varieties occur, both accidental ones, and others that seem to be 

 permanent; some are quite of a cream yellow on the upper side; 

 others milk white. 



One taken near Dover, recorded by the Rev. W. T. Bree, 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. Uuderneath, all the wings are clouded with black, and almost 

 entirely without the usual tesselated markings. 



In some the black is much suffused over the greater 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 bluff, so that the wings 

 appear nearly white, and without the eyes. 



The caterpillar is yellowish green, with a darker line down the 

 back and on each side. 



The figures, excepting the one of the variety, are from specimens 

 in my own collection. 



