BLACK-VEINED. 



77 



and rapid flight would quickly take it across the few 

 miles of sea that separate us from the Gallic shore. 



Hyale, whose flight is at least as strong as Edusa's, 

 and whose salt-water tastes are similar, doubtless acts 

 in the same manner. 



The northward range of this species is more limited 

 than that of Edusa, but it has been taken singly near 

 York, Manchester, and a few other northern localities. 

 In the lucerne fields near Brighton, a dozen or more 

 have been sometimes captured in one day. 



The caterpillar is of a sea-green colour, with four 

 yellow lines, two along the back and one on each side ; 

 and is to be found, in June and July, feeding on lucerne 

 and other plants of the same natural order. 



The chrysalis is very similar to that of Edusa, green, 

 with a yellow stripe. 



In this country, the butterfly first appears in August ; 

 but on the Continent it seems to be double-brooded, 

 being found in May as well as in August. 



THE BLACK-VEINED OE HAWTHOEN 

 BUTTEEFLY. (Aporia Cmtcegi.) 



(Plate IY. fig. 1.) 



WHEN on the wing, this species might easily be mis- 

 taken by the inexperienced for the common Cabbage 



