BUTTERFLIES OF THE DISTRICT OF COLUMBIA 7 



In 1927 I published a detailed account of the odors of butterflies 

 in which the following species were mentioned from the District : 



Eurymus philodice =Colias pfiilodice. 

 Eurema eiiterpe —Ewema Usa. 

 Papilio philenor =Papilio philenor philenor. 

 Papilio glaucus =PapiUo glaucus glaucus. 

 Papilio polyxenes =Papilio polyxenes asterias. 

 Papilio marcelliis =Papilio marcellus. 



In this paper the following were figured from District specimens : 



Eurymus eury theme, pi. 1, fig. 8 =C alias eury theme. 



Same, white female, pi. 1, fig. 9 =Colias eurytheme. 



Anthocharis genutia, pi, 2, figs. 10, 11 =Anthocharis genutia. 

 Junonia coenia, pi. 3, fig. 25; pi. 9, fig. 4.3=Junonia lacinia coenia. 

 Papilio marcellus, pi. 11, fig. 52 '= Papilio marcellus. 



In May, 1930, I published some notes on the following District 

 butterflies : 



Thanaos icelus. 

 Thanaos juvenalis. 

 Erynnis leonardus. 

 Poanes massasoit. 

 Poanes hobomok. 

 Poanes sahulon. 



Neonympha eurytus. 

 Satyrodes eurydice. 

 Cercyonis alope. 

 Euphydryas phaeton. 

 Brenthis myrina. 

 Argynnis cyhele. 

 Colias eurytheme. 



In the same paper I recorded the capture of Atrytonopsis Manna 

 in the District area, and gave a preliminary report on experiments 

 in contact photographs with butterfly wings. 



FORMS OF DISTRICT BUTTERFLIES 



The geographical form or race in which many common butterflies 

 occur within the District area is not quite the same as that in which 

 they occur elsewhere. This is particularly true of butterflies ranging 

 northward into New England and Canada, which, in a more or less 

 narrow belt in New York and southern New England, pass over into 

 a more or less distinct Canadian race. Compared with the local 

 races, the Canadian races are smaller, lighter in color, with the hind 

 wings more evenly rounded, and with less difference between the 

 sexes. 



In a discussion of the District butterflies, therefore, it is important 

 to have a standard of comparison to which the local forms may be re- 

 ferred. A most excellent standard for comparison is available in the 

 exceedingly detailed descriptions and excellent figures found in 

 Samuel Hubbard Scudder's Butterflies of the Eastern United States 

 and Canada with Special Reference to New England, published at 

 Cambridge, Mass., in 1889. 



66544—32 2 



