132 Tryon Reakirt on Coloradlan Butterflies. 



previously however, and have received it since from other localities in 

 the same region. 



At Empire City it was rather common in August, settling on 

 flowers by the edge of, or near streams. Flight similar to that of Pro- 

 todice, but quicker. 



I have only given the extreme western localities above. Mr. S. H. 

 Scudder very fully designates its eastern area of distribution as fol- 

 lows : — 



" It is found inhabiting the northern and eastern portions of N. A., 

 reaching south but rarely as far as Pennsylvania, and extending 

 to the east to Nova Scotia, west to Lake Superior, while to the north 

 it is found up to Great Slave Lake in the Hudson's Bay Company's 

 Territory, and even, according to Kirby, to lat. 65° N. on McKenzie's 

 River. 



Pieris Vernalis, Edwards. 



Edwards, Proe. Ent. Soc. II. p. 501. (1864.) 

 Hah. — Empire City, Colorado Terr. Schooley's Mt., N. J., (Coll. 

 Tryon Reakirt.) 



Kanawha, Philadelphia, (Coll. Win. II. Edwards.) 

 Pike's Peak, Colorado Terr., (Coll. Ent. Soc. Phil.) 

 " Red Bank, N. J., (Coll. Messrs. Newman and Wilt.)"— Ed- 

 wards. 



My male specimens differ slightly from Mr. Edwards' description, in 

 that the secondaries are not so heavily marked as his diagnosis would 

 lead us to infer, and the females are very much more so. I have one 

 of the latter, in which the secondaries have, on the upper side, a very 

 distinct sub-marginal serrate band of brownish-black scales, the points 

 extending to the margin, and united to the marginal line, and another, 

 in which they are immaculate, save a narrow marginal line. In both, 

 there is a series of marginal points, and a sub-marginal band on the 

 primaries, the opposite spots being connected by narrow black veins : 

 the spots extend only to the middle of the outer»margin, where they 

 abruptly terminate. Their fore-wings also present an indistinct patch 

 near the inner angle. 



The single specimen (male) from Empire City, (expanse 1, 5 

 inches,) was captured in August, in company with Protodice, from 

 which its flight is (indistinguishable. 



Those from Schooley's Mountain (expanse 1.67-1.88 inches,) were 

 taken in the early part of June. 



