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THE CANADIAN NATURALIST. 
ARCHIPPUS. 
( Danais ArcJiippus.) 
and fearlessly^ often alighting very near me^ so that I at 
length caught it. 
F, — This fine butterfly is said by the American natu- 
ralists to be unknown north of Virginia; it is rather 
rare here ; though I have seen as many as half a dozen 
in a season : in some seasons, however^ I have not met 
with one specimen. They often fly at a great height in 
the air. 
C. — We spoke some time ago of the habit which some 
butterflies have of congregating together. I observed^ a few 
days ago^ on the public road^ great numbers of the Clouded 
Sulphur (^Colias Philodice) in flocks of eight or ten, pitched 
on the patches of wet slushy mud ; they were so closely 
