BUTTERFLIES OF THE VICINITY OF NEW YORK CITY 
Common locally, and is on the wing during the latter part of 
April and until about the middle of August. The butterfly has a 
remarkable distribution. It is found in Lapland, Scandinavia, La- 
brador, and from the Canadian hills and Vermont to North Carolina. 
The early stages are unknown. 
84. Sooty Skipper (Pholisora catullus). 
Very common everywhere in open fields, gardens, roadsides and 
meadows. It is double-brooded, and flies from May until September. 
The caterpillar feeds on goosefoot (Chenopodium); it draws the leaves 
together with silken threads, making a case within which it lives. 
85. Nisontades brizo.' 
Found in May and June in moist, shady woods and along wood 
paths. The butterfly flies swiftly and near the ground. It is single- 
brooded. The caterpillar feeds on oak. 
86. Nisoniades lucilius. 
Rather common locally in open woods and roadsides, in May and 
June. Single-brooded. The caterpillar feeds on wild columbine 
(Aquilegia). 
1 The butterflies belonging to the genus Nisoniades are known commonly 
as ‘‘ Dusky-wings.”’ 
48 
