THE TRIBE OF THE HAHl-STREAKS 247 



wings, taking a sun-bath. There is but one brood a year, 

 butterflies appearing early in summer and remaining for 

 several weeks. They lay their tiny pale green eggs upon 

 the leaves of various trees, especially oaks and hickories, 

 and probably hawthorns. It is not known whether these 

 eggs remain unhatched as a rule until the following spring, 

 or whether they soon hatch and the young caterpillars 

 hibernate without feeding. It is probable that both con- 

 ditions occur. In spring the larvae eat holes in the leaves 

 of their food plant and grow rather slowly, gradually be- 

 coming brown or green slug-like caterpillars about half an 

 inch long. They finally change into greenish brown 

 chrysalids from which the butterflies emerge in early 

 summer. 



The Striped Hair-streak 



Thecla liparops 



In the Eastern states the distribution of this species is 

 almost the same as that of the Banded Hair-streak, but in 

 the Central West the outline of its region moves northward 

 extending into Canada, above North Dakota, and into 

 Montana and Wyoming. It does not go so far south, 

 however, extending practically only to the southern bor- 

 ders of Kansas and Missouri. The butterfly bears a strik- 

 ing general resemblance to the other species just named, 

 differing chiefly in the fact that the under surface of the 

 wings is much more thickly marked with broken lines that 

 extend nearer to the body. As a rule, it is not common 

 and consequently it is prized by collectors. Some good 

 observers have noticed that it is more likely to be found 



