30 LEPIDOPTERA. 



down. They suspend themselves by the tail and a 

 transverse loop, and their chrysalides are angular at the 

 side, and pointed at both ends." (2,269; 5- H-. 74' 

 3. n., 104). 



Pieris rapce Linn, is the most common species in 

 Central New York. It was introduced from England, 

 h-^ . having been first taken in Quebec in 1859. Eggs usu- 

 ally laid on the under side of leaves ; larva not only 

 feed upon the outer leaves but eat their way into the 

 centre of the cabbage, hence they are called, by the 

 French " Ver du Coeur." There are two broods each 

 year; the second brood hibernates in the chrysalis 

 state. 



Many of the chrysalides are destroyed by a Chalcis- 

 fly, Pteromalus puparuin Linn. 



To the genus Colias belong the Sulphur-yellow 

 butter-flies, so common in our pastures and about 

 muddy places in our roads. The species which is so 

 abundant in New England and the Middle States is 

 itj^j^, Colias-Pkilodice Godart. There are two broods of this 

 insect, one appearing in April and May, the other in 

 July. The butterflies, however, may be found during 

 the entire summer. The larva; feed on clover, lupine, 

 garden pea, and lucerne. (2, 272 ; i, 250). 



Danais Arcliippus Fabr. is a very common, large, ful- 

 f^' vous butterfly. The body, and margins of the wings 

 are black, marked with white or yellowish spots ; the 

 veins of the wings are also black. In the males the 

 black stripes on the veins are narrower than in the fe- 

 males, and there is a horny excrescence upon or near 

 the fourth vein of the secondaries. The wings ex- 

 pand about four inches. 



The eggs are deposited on the under side of a leaf. 



