WHITES. 



165 



out (Quebec as the locality of introduction, 

 and fixes the period at about seven or eight 

 years ago."" Zoologist" 1864. 



These highly interesting facts may reason- 

 ably excite the inquiry whether Antiopa 



Aialanta, and many other insects, have not 

 migrated in the same way from continent to 

 continent, and whether man may not have 

 been im-trun eutal, however unwittingly, in 

 aiding the migration. 



58. Large White (Pieris Brassicce). Male and Female. 



58. LAKGE WHITE. The fore wings have 

 the costa arched, the tip pointed, but not 

 acutely so, and the hind margin simple and 

 entire ; the hind wings have the margin 

 simple and entire : the colour is white, but 

 the fore wings have a broad smoky black tip, 

 which diminishes almost to a point on the 

 costal as well as on the hind margin ; the 

 females have, in addition, three black spots, 

 one of them nearly circular and nearly central, 

 another also nearly circular between this and 

 the inner margin ; the third is club-shaped 

 and inner-marginal, the tip of the club almost 

 touching the second circular spot, and the 

 slender end of the club extending along the 

 inner margin more than halfway towards the 

 base of the wing : the hind wings have a black 

 spot about the middle of the costal margin. 

 The under side has the disk of the fore wings 

 white with a yellow-gray tip and two black 



spots, corresponding with those on the uppei 

 side of the female ; the hind wings are dull 

 yellowish-white sprinkled with black scales. 



Varieties. At p. 471 of the second volume 

 of the "Zoologist," Mr. J. Plant, of Leicester, 

 figures a variety of this butterfly with a 

 sharply-defined black patch at the base of all 

 the wings. At p. 258 of the fourth volume 

 of the " Entomologist," Mr. J. M. Bramwell, 

 of Perth, mentions that he has in his col- 

 lection a curious specimen of this butterfly 

 captured in 1868, about two miles from Perth. 

 It is a female, and of a uniform dusky black 

 colour, both on the upper and under sides ; 

 the black spots on the wings are quite dis- 

 tinct, being of a much more intense and 

 shining black than the ground colour. I 

 ought also to mention that Mr. Stephens, in 

 his " Illustrations of British Entomology.' 

 makes "species" of the two broods of this 



