Genus Pholisora 
together with a few threads of silk. It lies concealed during the 
day and feeds at night. A minute account of all its peculiarities 
is given by Scudder in “The Butterflies of New England,” vol. 
ii, p. 1519- 
The insect ranges over the whole of temperate North America. 
(2) Pholisora hayhursti, Edwards, Plate XLVIII, Fig. 16, ? 
(Hayhurst’s Skipper). 
Butterfly .—Easily distinguished from the preceding species 
by the somewhat crenulate shape of the outer margin of the hind 
wings, the white color of the under side of the abdomen, and 
the different arrangement of the white spots on the fore wings, as 
well as by the dark bands which cross both the fore and the 
hind wings on the upper side. Expanse, .90-1.15 inch. 
Early Stages .—Our information as to these is incomplete. 
The species ranges from the latitude of southern Pennsylvania 
westward and southward to the Gulf, as far as the Rocky Moun¬ 
tains. 
(3) Pholisora libya, Scudder, Plate XLVIII, Fig. 14, 6 (The 
Mohave Sooty-wing). 
Butterfly .—Easily distinguished from the two preceding spe¬ 
cies by the white fringes of the wings and by the markings of 
the under side. The primaries on the lower side are dark, tipped 
at the apex with light gray, and in the female having the costa 
and the outer margin broadly edged with light gray. The hind 
wings are pale gray of varying shades, marked with a number 
of large circular white spots on the disk and a marginal series of 
small white spots. Expanse, 6, .80-1.25 inch; ?, 1.15-1.40 
inch. 
Early Stages .—These await full description. 
This species is found from Nevada to Arizona, and is appa¬ 
rently very common in the Mohave Desert. 
(4) Pholisora alpheus, Edwards, Plate XLV, Fig. 2, $ (Al- 
pheus). 
Butterfly .—This little species is nearer P. hayhursti than any 
of the others we have described, but may at once be recognized 
and discriminated by the checkered margins and white tip of the 
fore wing and the linear shape of the spots composing the sub¬ 
marginal and median bands on the upper side of this wing. The 
hind wings on the under side are marked with a number of light 
spots arranged in marginal and median bands. 
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