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A New Genus of Larridæ
Volume 20, Page 38
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Synopsis of the Hormiinae of North America
Volume 20, Page 39
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Notes on Lecanium, with a list of the West Indian species
Volume 20, Page 49
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The Galerucini of Boreal America
Volume 20, Page 57
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Notes on Bees, with Descriptions of New Species
Volume 20, Page 145
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The Phalangida Mecostethi of the United States
Volume 20, Page 149
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Notes and descriptions of Pselaphidae, with remarks on the Scydmoenidae
Volume 20, Page 277
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A Synopsis of the Harvest-Spiders (Phalangiidæ) of South Dakota
Volume 20, Page 285
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The Cosmetidæ of the United States
Volume 20, Page 293
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The entomology of the Mid-Alpine zone of Custer County Colorado
Volume 20, Page 305