Scudder, Samuel Hubbard, 1872, A systematic revision of some of the American butterflies; with brief notes on those known to occur in Essex County, Mass

Scudder, Samuel Hubbard, 1872, A systematic revision of some of the American butterflies; with brief notes on those known to occur in Essex County, Mass, Annual Report of the Peabody Academy of Science 4, pp. 24-83

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