North American Ichneumon-flies, new and described, with taxonomic and nomenclatorial notes.
Published in Proceedings of the United States National Museum, Washington D. C., in 1921, in volume 58, issue 2334, pages 251-292
Date published:1921
Published in Proceedings of the United States National Museum, Washington D. C., in 1921, in volume 58, issue 2334, pages 251-292
Date published:1921