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Published online by Cambridge University Press: 31 May 2012
2. On the scarcity of certain Species in 1885.
The most notable instance was that of C. Philodice, which is usually a very common species here. Throughout the year I saw but three or four examples.
In 1884, V. Cardui was remarkably abundant, as it seems to have been all over the Northern States. But in 1885 I scarcely saw one.