FAMILY TYPICAL BUTTERFLIES. 141 



principally bluish green, the broader lighter bands being dorsal 

 and stigmatal; numerous black papillae of two different sizes, the 

 larger arranged in series. Length | inch. 



Chrysalis. — Fusiform, pointed at each end; frontal horn 

 plumbeous, thorax pallid, wing-cases .yellowish, abdomen pale 

 yellow, the whole dotted with black. Length f inch. 



A southern and eastern butterfly, found also in the 

 eastern half of the southern portion of our district, even 

 into New England; it occurs also in southern Illinois 

 and Ohio. It is found in open woods and flies leisurely in 

 a somewhat zigzag course and rarely alights. It is single- 

 brooded and hibernates as a chrysalis. It appears with the 

 first foliage early in May and flies only through this month 

 or for a few days into June. The eggs are tall sugar-loaf - 

 shaped with about fourteen vertical ribs and of an orange 

 color and hatch in four or more days; they are laid singly 

 on the stems and leaves of Cruciferous plants of a slender 

 habit, Sisymbrium and Arabis, and the caterpillars feed on 

 the flowers and buds, and later on the seed-pods. The 

 change to chrysalis is somewhat curious, as related by 

 AY. H. Edwards. 



Another of the Orange-tips, Synchloe olympia, has been found at 

 distant intervals and in scanty numbers in the western and southern 

 parts of our district — Kansas, Nebraska, Missouri, Illinois, Indiana, 

 and West Virginia. 



TRIBE WHITES. 

 41. Genus Pontia. 



po'ntia protodice— the checkered white. 



(Pieris protodice, Pieris vernalis, Pieris occidentalis.) 



Butterfly. — Wings white, the fore wings marked above with 

 grayish brown by a broad bar across the end of the cell, an inter- 

 rupted, transverse, unequal belt across the outer third of the 

 wing (subobsolete in the male) and triangular marginal spots at 



