This finding aid was digitized with funds generously provided by the Smithsonian Institution Women's Committee.
This collection consists of notebooks which contain keys and descriptions, mostly of genera of Hymenoptera, almost entirely the Ichneumonidae. The greater part of the notebooks have been published, but contain unpublished information. See Foerster, "Synopsis der Familien und Gattungen des Ichneumonen," Verhandlungen des Naturhistorischen Vereines, volume 25, pp. 135-221, Bonn, 1868. See also J. F. Perkins, "On the Type Species of Foerster's Genera (Hymenoptera, Ichneumonidae), Bulletin of the British Museum (Natural History) Entomology, volume II, no. 8, London, 1962. The notebooks are written in German, Greek, and Latin.
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