BUTTERFLIES OF THE VICINITY OF NEW YORK CITY 
Very rare in this vicinity. It is closely allied to T. calanus, but 
differs in the position and number of white lines on the under side. 
The butterfly appears to be local, and is rarely found away from 
thickets. It flies early in July, and is rarely found on the wing after 
the first of August. The eggs are laid in July and remain unhatched 
until spring. The caterpillar feeds on oak, holly, thorn, plum and 
apple. 
49. Hoary Hair-Streak (T7hecla irus). 
Rather common locally in this neighborhood, especially in pine 
woods and open places near where huckleberries grow. The cater- 
pillar is said to feed on these plants. It lives on the wild plum also. 
The butterfly appears during the latter part of April, and is on the 
wing until about June. 
50. Coral Hair-Streak (Thecla titus). 
The butterfly frequents flowers in open sunny places near thickets 
and woods. It is found in July and early in August, and is single- 
brooded. In this vicinity it is considered rare, but occasionally it has 
been found in considerable numbers. Its color is sepia-brown, with 
a row of coral-red spots along the outer border on the under sides of 
the hind wings. The caterpillar lives on plum and wild cherry. 
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