Genus Satyrus 



fectly plain to me, and we cannot be sure until more extensive 

 experiments in breeding have been carried out. 



(i) 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, 8 ; Fig. 2, 

 S ; 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. 3, 

 $ ; Fig. 4, ? , under side ; Plate IV, Figs. 7, 8, chrysalis (The 

 Clouded Wood-nymph). 



This varietal form of 5. 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, $ ; Fig. 10, ?, under side (Olympus). 



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