Genus Satytus 
fectly plain to me, and we cannot be sure until more extensive 
experiments in breeding have been carried out. 
(1) Satyrus pegala, Fabricius, Plate XXVI, Fig. 18, $, under 
side (The Southern Wood-nymph). 
Butterfly.— The largest species of the genus in our fauna, 
easily recognized by the broad yellow submarginal band on the 
primaries, marked with a single eye-spot in the male and two 
eye-spots in the female. The plate gives a correct idea of the 
under side of the wings. Expanse, 2.75 inches. 
Early Stages.— These have only been partially ascertained. 
The caterpillar, like all others of the genus, feeds on grasses. 
This insect is found in the Gulf States and as far north as 
New Jersey, and is probably only a large Southern form of the 
next species. 
(2) Satyrus alope, Fabricius, Plate XXVI, Fig. 1, S ; Fig. 2, 
2 ; Plate III, Fig. 18, larva (The Common Wood-nymph). 
Butterfly.— Closely resembling the preceding species, but only 
two thirds of its size. The figures in our plate give a correct 
idea of its appearance. The number of the ocelli is not constant, 
and occasionally specimens occur in which they are almost want¬ 
ing. Several varietal forms have been described: S. maritima, from 
Long Island and Martha’s Vineyard, in which the wings are 
smaller, the band inclined to orange-yellow, and the upper side 
of the wings is darker than in the typical form; and S. texana , 
from the extreme South, in which the ground-color of the wings 
is paler brown, the yellow band ochreous, and the spots on the 
under side of the hind wings larger than in the other forms. 
(a) Satyrus alope, form nephele, Kirby, Plate XXVI, Fig. y 
$ ; Fig. 4, $, under side; Plate IV, Figs. 7, 8, chrysalis (The 
Clouded Wood-nymph). 
This varietal form of S. alope, long held to be a species, but 
now known to be a dimorphic variety, is characterized by the 
partial or entire suppression of the yellow band on the primaries 
and the tendency of the eye-spots to become obsolete. It is the 
Northern form of the species, and is found in Canada, New Eng¬ 
land, and on the continent generally, from the Atlantic to the 
Pacific, north of the latitude of central New York and southward 
on the mountain masses of the Appalachian ranges, 
(b) Satyrus alope, form Olympus, Edwards, Plate XXVI, 
Fig* 9> 3 5 Fig- I0 > ?> under side (Olympus). 
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