(VI TH FURTHER HISTORIES. 165 



The imported Cabbage butterfly [see Figs. 110, 

 111] just mentioned is a case in point ; the spring 

 butterflies are smaller and of a duller white than 

 the later broods, with broader black markings on 

 the middle and tip of the wing, and the base 

 sprinkled with black atoms, which are almost 

 entirely wanting in the other broods ; beneath, 

 where the markings in this genus are most con- 

 spicuous and va- 

 ried, there is a 

 powdery streak of 

 black s c ales 

 along the middle 

 of the hind wings, 

 which, in the later 

 broods, is much 



, FIG. 138. Pieris oleracea, nat. size (Harris). 



less conspicuous. 



A somewhat similar distinction occurs in its 

 near ally, the Gray- veined White 

 [Figs. 138, 139]. The summer 

 FIG. m-chrysaiis brood of this species is almost 



of Pieris oleracea, .... .. ... ,., 



nat. size (Riiey). pure white, while the spring 

 brood, besides being smaller, has the under sur- 

 face of the hind wings and of the tip of the fore 

 wings heavily washed with yellow, and all the 

 veins in the same area broadly sprinkled with 

 dark scales. Moreover, in all the whites, the 

 hind wings of the second generation are longer 

 than those of the first. 



