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Notes: Date of publication from Evenhuis (1994b).

Scudder, S. H. 1891. Index to the known fossil insects of the world, including myriapods and arachnids. Bulletin of the United States Geological Survey 71:1-744. PDF

Notes: Hymenoptera pp. 682-734.

Scudder, S. H. 1899. An unknown tract on American insects by Thomas Say. Psyche (Cambridge) 8:306-308. PDF

Notes: See Say (1831).

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