THE NYMPHS 



its fellows around the mud-puddle. It is a slow 

 flyer, being a sluggish insect in all its stages. 



The caterpillars are social when they first hatch 

 from the egg and live on the parenchyma on the 

 lower side of the leaf ; later they eat holes into 

 the leaf. When disturbed they coil up and drop. 

 There are two broods, and the caterpillars of the 

 second brood when about half grown hide in safe 

 corners and there pass the winter. 



THE ANGLE-WINGS 



With the exception of a single species, the buckeye, all of 

 the angle-wings found in our Eastern fauna are sharply dis- 

 tinguished from other nymphs by having hairy eyes. The 

 club of the antenna; is long and fairly distinct ; it is marked 

 with three slightly elevated lines. The wings are usually 

 decidedly angular and excised ; but in the last four species 

 described below this character is not so prominent as in the 

 others. A large proportion of the species hibernate in the 

 adult state, and some of them are the first butterflies to appear 

 in the spring. Some of the hibernating species, however, 

 remain in concealment till quite late in the season. 



The species that occur in the eastern United States can be 

 separated by the following table : 



A. Without a silvery spot on the center of the lower sur- 

 face of the hind wings. 



B. Eyes naked ; upper surface of tore wings with one or 

 two conspicuous eyelike spots. (J. cmnid), p. 160. 



The Buckeye. 



131 



