1929] On Certain Forms of Common American Buttenies 
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The wet form of our Junonia coena in this region, there- 
fore, is represented by local colonies leaving no descendents 
which originate from dry parents. 
Cynthia atalanta . — Like the buckeye, the red admiral oc- 
curs in the District in two quite different forms. In boggy 
areas with an abundant growth of the false nettle ( Bohmeria 
cylindrica) there appear in late summer large individuals 
which above are blackish instead of brown with the border 
of the hind wings redder than in the usual form and the 
band on the fore wings redder and narrower and crossed by 
black veins, and below are much darker, especially on the 
hind wings. 
This form differs from the usual type just as the “wet” 
form of Junonia coena differs from the “dry” form, occurs in 
the same localities, and appears in the same way in late 
summer. 
It seems not to survive the winter, as all the numerous 
spring individuals caught in the places where the dark form 
is later to be found are of the small brownish form. It is to 
be interpreted as a “wet” form descended from “dry” 
parents and leaving no progeny. 
Cynthia cardui . — Within the District, and throughout the 
whole of New England except for the southern coast, the 
painted lady when it occurs is represented by a large form 
with the fore wings slightly shorter than usual and some- 
times very short, and the hind wings slightly broader and 
more rounded. The color is dark and brilliant, and the upper 
surface and the inner portion of the lower surface of the 
fore wings is strongly tinged with pink. The submarginal 
spots on the hind wings are usually large, and not infre- 
quently on the upper surface show conspicuous blue centers. 
This form, which is the only one found in the District 
and in most parts of New England in the summer and 
autumn, seems to be the “wet” form of this species which, 
like the corresponding forms of Junonia coena and of Cynthia 
atalanta , cannot survive the winter. 
So far as I have been able to learn, wherever this form 
occurs exclusively this butterfly is of uncertain and more 
or less irregular appearance. It survives the winter only 
where the smaller, duller, longer winged form is to be found 
in the late summer. 
The more or less irregular occurrence of this insect in 
