86 THE BUTTERFLIES OF THE 



fourth segments without yellow ; at the junction of the 

 fourth and fifth joints is a velvety-black band, preceded 

 by white and followed by yellow. At the fourth moult 

 the color becomes darker, each segment crossed by a 

 pale yellow and four gray stripes. 



In some of the larvae the general color is gray, with 

 white, black, and yellow bands on the fourth and fifth 

 segments, and the segments after the fifth crossed by one 

 yellow and two dull white stripes. In other specimens 

 the color is blue-green, each segment crossed by gray, 

 yellow, and clear white, the white band replaced by 

 turquoise-blue. In still others the color is pale green 

 throughout, except one yellow stripe on each segment, 

 the bands being blue, black, and yellow. 



Chrysalis from .8 to .9 of an inch long, cylindrical, 

 tapering posteriorly from the middle of the abdomen ; 

 head triangular, terminated by two short lateral points ; 

 another, beak-like, on the thorax ; from this two small 

 ridges pass along the wing-cases and down the abdomen 

 to the extremity, and between them two others starting 

 from the upper segments of the abdomen, on the outer 

 sides of which last, in those chrysalides which are brown, 

 is a fine light-colored line. Color dead-leaf brown or 

 bright green. 



Location from Pennsylvania to Texas, and through 

 the Mississippi Valley, where it flies from March or 

 April till cool weather in the fall. 



2. PAPILIO PHILENOK, Linn. 



Expanse of wings from 3.5 to 4.5 inches. 

 Body and wings black ; the hind wings of the male re- 

 flecting a metallic green, those of the female a steel-blue. 



