1926] 
Odors of Some New England Butterflies 
3 
that in the two preceding. I have made no personal observations 
on it. 
Brenthis myrina (Cramer). — No odor was detected in either 
sex; but the females have the same odoriferous organs as are 
found in the females of related types which undoubtedly are the 
same in function. 
Junonia coenia Hiibner. — In the large and handsome dark 
variety with the under surface of the wings dull pinkish red 
which is the commonest about Washington in the fields where 
the food plant ( Agalinis purpurea) is abundant the males have a 
rather strong sweet odor which is sometimes evanescent. This 
variety has curiously soft wings and always feels as if recently 
emerged. It is sluggish, and rarely flies for more than fifty feet 
or so. 
The variety occurring in New England is much smaller, 
distinctly brown above and buffy gray below. The wings are 
hard and brittle and most individuals caught are damaged in 
contrast to the other form in which broken specimens are relative- 
ly rare. It is exceedingly alert and active, a much stronger flier 
than the other, less easily visible on the wing and much more 
difficult to catch. Specimens from Washington are indistin- 
guishable from those from Massachusetts. The males, so far 
as I can find, are scentless; at any rate the odor is much less 
pronounced than in the other type. 
About Washington the small light active form is found 
sparingly with the other, from which it differs in keeping mostly 
well above the ground resting on the tops of the higher plants 
and quickly darting off on the slightest provocation. It is much 
more frequently to be seen on barren hillsides, about the city 
parks and streets, and generally in unfavorable localities where 
the other is not found. 
One might reasonabW infer that this well marked variety is 
a special form particularly fitted for long continued flight and 
therefore especially adapted for distributing the species. 
Vanessa cardui in New England also appears to have a 
special form distinctively colored on the under side with cor- 
responding habits. This form flies in a straight line usually 
