part $♦ 

 BUTTERFLIES. 



PIERIS GHEIRANTHI. 



Plate I.— Fig. 2. 



This is a large creamy-white butterfly peculiar to the 

 Canary Islands. It is found in some numbers on and 

 near the coast of Teneriflfe from April to September ; 

 the time of its appearance, however, varies somewhat in 

 different years. The larva is smooth, and has a ground- 

 colour of grey, finely dotted over with black spots. 

 There is a yellow stripe on the back and along each side. 

 It feeds on the nasturtium gregariously, and the pupa 

 attaches itself, head downwards, to a wall near the plant. 

 The female butterfly, the underside of which is illus- 

 trated, has a long uneven blotch of black on the surface 

 of the fore-wings ; the male has none. The upper sur- 



