16 BLACK VEINED. 



of Newbury ;" Chelsea, Middlesex ; Muswell Hill and Heme Bay, 

 Kent; Lewes, in Sussex; and Glanville's Wootton, near Sherborne, 

 Dorsetshire, are also given as localities for it ; but I believe it is no 

 longer found in the last-named situation. It has been taken, I am 

 told, at Bishop's Wood, Cawood, Yorkshire. 



The caterpillar feeds on the whitethorn, {Cratcegus uxyacantha,) the 

 blackthorn, [Cratagus nigra,) the cherry pear, the Prunus spinosa, 

 and other fruit trees. 



This butterfly varies in size from about two inches and a quarter 

 to nearly three inches : all the four wings are of a dull milk-white 

 colour, elegantly, at least in the eye of the entomologist, streaked over 

 with the black veins from whence the insect derives its name ; they 

 shew through, the wings being semi-transparent, so that the under side 

 resembles the upper in its markings and general appearance. 



In the female the veins of the fore wings are generally of a 

 brownish hue ; and in one specimen that I have, the outer edge is 

 bordered witli a very deeply indented line of blackish brown, the 

 indentations running up the veins to a point, but all united together 

 at the outside. 



The caterpillar is at first black, but becomes afterwards thickly 

 covered with whitish hairs, and on the sides and underneath is of a 

 dark grey colour, with two longitudinal stripes of red or yellow. 



The chrysalis is greenish white, with two streaks of yellow on the 

 sides, a number of black dots, and a few black streaks. 



The figures are taken from specimens in my own collection. 



