394 
THE STUDY OF TV SECTS. 
ha-le'sus).—This is the largest of our eastern hair-streaks, 
the larger individuals expanding two inches. In the male 
the greater part of the upper surface of the wings is bright 
blue; the discal stigma, the outer fourth of the fore wings, 
the apex of the inner margin of the hind wings, and the 
tails are black. In the female the outer half of the wings is 
black. 
The species occurs in the southern half of the United 
States and southward. It has been found as far north as 
Illinois. The larva is said to feed on oak. 
The White-M Hair-streak, Eupsyche m-album (Eu-psy'- 
che m-al'bum).—This is a smaller species, expanding about 
one and one half inches. The upper surface of the disk 
of the wings is a rich, glossy dark blue, with green reflec¬ 
tions ; a broad outer border and costal margin are black. 
The hind wing has two tails, and a bright dark orange 
spot preceded by white at the anal angle. The under sur¬ 
face is brownish gray, and on this surface both wings are 
crossed by a common, narrow white stripe, which forms a 
large W or reversed M on the hind wings. 
This species occurs in the southern half of the United 
States. The larva feeds on oak and on Astrangulus . 
Subfamily LEMONIINiE (Le-mon-i-i'nae). 
The Lenioniids {Le-mo' ni-ids). 
This is a large subfamily; but the species are found 
chiefly in South and Central America. In our fauna it is 
represented only by a small number of rare butterflies. 
If we except one Floridian species ( Eumenia atala ), this 
subfamily is represented in the Eastern United States by 
only two species. In the far West eleven others are now 
known. The eastern species are the Large Metal-mark, 
Calephelis borealis (Cal-e-phe'lis bo-re-a'lis), which expands 
one inch or more, and the Small Metal-mark, Calephelis 
ccznius (C. cae'ni-us), which expands less than four fifths of an 
inch. In both species there are on the outer half of the 
wings two lines of shining lead-colored scales. 
