BUTTERFLIES OF THE VICINITY OF NEW YORK CITY 



51. Green Hair-Streak (Thecla damon). 



Found on the wing in May and June, and again in July and Au- 

 gust. It occurs only in localities where cedar trees grow, this tree 

 furnishing the food of the caterpillar. The butterfly when disturbed 

 flies for a short distance and suddenly drops to the ground, folding 

 its wings. Owing to the green color on the under side of the wings, 

 it is quite difficult to detect the insect in the L^ra 



52. Brown Elfin ( Thecla augustus). 



In color on the upper surface this insect is like that of T. irus, but 

 ic differs greatly from that species as to the under side of the hind 

 wings, which have the basal half deep brown and the outer half ru 

 brown, with a row of minute dark spots. It is found in pine woods 

 in April and May. 



53. Pine Hair-Streak . k la niphon). 



Rare in this vicinity. Pound in pint :lv in 



It is single-b: 



35 



