222 BULLETIN 15 7, U. S. NATIONAL MUSEUM 



Washington by A. Koebele on August 18, 1883, I have a male taken 

 at Cabin John on September 12, 1926, and two females, one taken 

 at Cabin John on September 17, 1926, and the other captured at 

 Silver Spring on September 14, 1928. 



Remarks. — There are probably at least two broods of this butterfly 

 in the District. 



POLITES CERNES (Boisdnval) 



Plate 49, Figures 5, 6 



Occurrence. — This is one of the commonest skippers in the District 

 and is found everywhere in grassy regions. 



There are two specimens in the Schonborn collection, a male and 

 a female, the former taken on Ma}'' 29. I have a long series taken 

 on June 2, 3, and 17, August 10, and September 12. 



Seasons. — This butterfly is double brooded in this region. The 

 first brood appears toward the end of May, and the insect is common 

 until after the middle of June, when its numbers decrease, and it 

 almost entirely disappears in July. The second brood makes its 

 appearance about the last of July, and the butterfly is abundant in 

 the last half of August and the first half of September, flying, in 

 diminishing numbers, until early in October. 



Genus ATALOPEDES Scudder 



ATALOPEDES CAMPESTRIS (Boisduval) 



Sachem 



Plate 16, Figure 3 ; Plate 35, Figures 2 to 5 



Atalopedes campestris Claek, Animals of land and sea, 2d ed., p. 284, upper 

 figure (gynandromorph), 1927. 



Occurrence. — Abundant everywhere in open fields. Except for 

 the least skipper {Ancyloxypha nuviitor) and the little Polites coras^ 

 this is the commonest of the smaller skippers in the District. It is 

 frequent in spring, common in midsummer, and reaches its maximum 

 abundance about the middle of September. It flies until after the 

 middle of October. 



Mr. Shoemaker has taken it along the Eastern Branch on Septem- 

 ber 23, 1927, and at Mount Vernon, Va., on September 22, 1927. 

 There are two males and three females from the District in the 

 Schonborn collection. 



The National Museum collection contains 4 specimens, 2 taken in 

 Washington by F. C. Pratt on October 26, 1894, 1 taken in Washing- 

 ton in 1915, and 1 taken in the District on July 24, 1892. 



