Contributions to our knowledge of bees and ichneumon-flies, including the descriptions of twenty-one new genera and fifty-seven new species of ichneumon-flies
Open Access
- 1 January 1912
- journal article
- Published by Smithsonian Institution in Proceedings of the United States National Museum
- Vol. 42 (1920) , 613-648
- https://doi.org/10.5479/si.00963801.42-1920.613