132 THE COMMONER BUTTERFLIES. 



FAMILY TYPICAL BUTTEEFLIES. 

 Subfamily Piekids. 



TRIBE RED-HORNS OR YELLOWS. 



34. Genus Callidryas. 



CALLIDRYAS EUBULE— THE CLOUDLESS SULPHUR. 



Butterfly. — Upper surface of wings canary-yellow, the tips of 

 the nervules, especially in the females and on the fore wings, 

 touched with dark brown. Under surface of a similar but less 

 pure color more or less, in the female often very much, marked 

 by scattered flecks of ferruginous in somewhat definite transverse 

 series ; at the tip of the cell a more distinct small ferruginous 

 spot, silver-pupilled on the hind wing. Expanse 2|-3 inches. 



Caterpillar. — Head pale green. Body naked but sparsely pilose, 

 pale green with a bluish tinge, especially above, and a yellow 

 stigmatal band ; each section of the segments with a straight 

 transverse row of small, black, distant papillae. Length If 

 inches. 



Chrysalis. —Body as a whole distinctly bent in the middle ; 

 wing-cases excessively protuberant ; frontal horn very long ; color 

 usually pale glaucous green with yellow stripes, but sometimes 

 pale yellowish green or roseate, minutely dotted on back with 

 lighter points. Length 1^ inches. 



This is a southern butterfly, very abundant in our South- 

 ern States and extending northward into the southern por- 

 tions of our district, occasionally as far north as southern 

 New York. In the South it sometimes migrates in flocks, 

 apparently always in a southern direction. It seems to be 

 double-brooded, the second brood much more abundant 

 than the first, and as the latter is the only one which has 

 been seen in the North (in August), its occurrence in our 

 district may be entirely due to migration, which its known 



