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Five new Coccidae
Volume 31, Page 5
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Notes on Arkansas Truxalina
Volume 31, Page 53
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A classification of the North American Myrmeleonidae
Volume 31, Page 67
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Six new Ottawa Proctotrypidae
Volume 31, Page 77
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A few Canadian longicorns
Volume 31, Page 107
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Classification of the entomophilous wasps, or the superfamily Sphegoidea
Volume 31, Page 145
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The North American species of Orphulella
Volume 31, Page 177
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Cockerell, T.D.A. (1899). Tables for the determination of the genera of Coccidae
Volume 31, Page 273
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Classification of the entomophilous wasps, or the superfamily Sphegoidea
Volume 31, Page 322
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New genera and species of Nycteribidae and Hippoboscidae
Volume 31, Page 333