6 FARMERS’ BULLETIN 166. 
year, in northern New Hampshire and Vermont. In 1868 it had 
reached New York, and soon thereafter began to attract attention in 
new localities. In 1875 it appeared in Cleveland, Ohio, and two 
years later in Illinois. In 1880 it had penetrated southward to the 
Gulf States. This distribution has continued until now the species 
is known in practically every State in the Union. It appears to 
/\ 
Nephi les Ca 
Fic. 6.—Map showing spread of common cabbage butterfly from 1860 to 1881. 
(Adapted from Scudder.) 
favor no particular part of the country, being as destructive in the 
Gulf region as in Canada and New England. In the Western 
Hemisphere this butterfly ranges from the Atlantic to the Pacific, 
in most localities between the thirtieth and sixtieth degrees of 
latitude. 
The accompanying map (fig. 6) shows approximately how this 
species has spread, chiefly by flight, according to the opinion of the 
