EASTERN UNITED STATES. 



109 



Winter form, Vernalis, Edw. — This form is smaller 

 than the summer form, and the dark colors are more 

 prominent. The spots of the subterminal row of the 

 fore wings are more inclined to be connected. It ex- 

 pands scarcely 1.6 inches. 



Body black, with some white hairs and scales. 



The eggs are long, slender, pointed, and deposited 

 singly on the under side of the leaves of its food-plant, 

 often a number on one leaf. 



Fig. 25. 



P. Protodice, larva and pupa. 



The larva when first hatched is of a uniform orange 

 color, with a black head. When full grown it averages 

 1.15 inches in length and is nearly cylindrical. The 

 most common color is green verging into blue, each 

 joint with six transverse wrinkles. There are four 

 longitudinal yellow lines each equidistant from the 

 other, and each interrupted by a pale blue spot on the 

 first and fourth wrinkles of each joint. There are traces 

 of another substigmatal line. On each wrinkle is a row 

 of various-sized, round, black, piliferous spots, those on 

 wrinkles one and four being largest and most regularly 



10 



