A Journal of Entomology
founded in 1874 by the Cambridge Entomological Club
Volume 28 (1921)
Descriptions of New Ichneumonidæ in the Collection of the Museum of Comparative Zoology, Cambridge, Mass.
The Origin and Homologies of the So-called “Superlinguæ” or “Paraglossæ” (Paragnaths) of Insects and Related Arthropods.
Reproduction in the Aphididæ with a consideration of the modifying influence of Environmental Factors.