Freeman Bibliographical Database
| Identifier: | A5452 |
| Date: | 1864 |
| Concise reference: | Packard, Alpheus Spring Jr. 1864. The humble bees of New England and their parasites; with notices of a new species of Anthophorabia, and a new genus of Proctotrupidae. Proceedings of the Essex Institute 4 (1864-5): 107-140. [Darwin Pamphlet Collection] |