Some New Hymenopterous Insects from the Philippine Islands

On Some Hymenopterous Insects from the Island of Formosa

Descriptions of Thirteen New Species of Parasitic Hymenoptera and a Table to Certain Species of the Genus Ecphylus

Descriptions and Notes on Some Ichneumon-flies from Java

New Sawflies in the Collections of the United States National Museum

The North American Ichneumon-flies of the Tribes Labenini, Rhyssini, Xoridini, Odontomerinia, and Phytodietini

Sawflies from Panama: With Descriptions of New Genera and Species

Philippine Wasp Studies: Pt. 1. Descriptions of New Species, Parts 1-2

Hymenoptera: A Collection of Articles from Miscellaneous Surces

University of Colorado Studies