-
Distribution of insects in western North America
Vol 12, Page 1, Date 1919
-
A new chalcid-fly parasitic on the Australian bull-dog ant
Vol 12, Page 13, Date 1919
-
Notes on the crane-flies of the Hawaiian Islands (Tipulidae, Diptera)
Vol 12, Page 25, Date 1919
-
The Californian Species of Malthodes
Vol 12, Page 31, Date 1919
-
Notes on the Repugnatorial Glands of Certain Notodontid Caterpillars
Vol 12, Page 44, Date 1919
-
Notes on the Immature Stages of Deltometopus Rufipes Mels. (Coleoptera, Eucnemidae)
Vol 12, Page 49, Date 1919
-
Resolutions on the Death of Dr. S. W. Williston
Vol 12, Page 56, Date 1919
-
Thirteenth Annual Meeting
Vol 12, Page 57, Date 1919
-
The Olfactory Sense of Lepidopterous Larvae
Vol 12, Page 65, Date 1919
-
The streptocera group of the dipterous genus Tipula Linnaeus
Vol 12, Page 85, Date 1919
-
Life History and Biological Notes on Chlaenius Impunctifrons Say. (Coleoptera, Carabidae)
Vol 12, Page 95, Date 1919
-
Robberflies of the genus Erax
Vol 12, Page 103, Date 1919
-
Some chalcid-wasps reared from cecidomyiid galls
Vol 12, Page 159, Date 1919
-
The Progress of Scolia Manilae Ashm. in Hawaii
Vol 12, Page 171, Date 1919
-
Notice of Proposed Amendment to the Constitution of the Entomological Society of America
Vol 12, Page 172, Date 1919
-
The ants of the genus Metapone Forel
Vol 12, Page 173, Date 1919
-
Notes on the Male Genital System in Certain Lepidoptera
Vol 12, Page 192, Date 1919
-
The Aquatic Adaptations of Pyrausta Penitalis Grt. (Lepidoptera)
Vol 12, Page 213, Date 1919
-
Chariesterus and Its Neotropical Relatives (Coreidae Heteroptera)
Vol 12, Page 227, Date 1919
-
Eight New "Jassids" from the Eastern United States
Vol 12, Page 231, Date 1919
-
New western spiders
Vol 12, Page 239, Date 1919
-
The Terminal Abdominal Structures of Orthopteroid Insects: A Phylogenetic Study
Vol 12, Page 267, Date 1919
-
Undescribed species of Japanese crane-flies (Tipulidae, Diptera)
Vol 12, Page 327, Date 1919
-
Wing Structure of Lepidoptera and the Phylogenetic and Taxonomic Value of Certain Persistent Trichopterous Characters
Vol 12, Page 349, Date 1919
-
The Life History and Early Stages of Platymetopius Hyalinus Osb., a Japanese Maple Leaf-Hopper in New Jersey
Vol 12, Page 369, Date 1919
-
The Prevalence of Phormia Azurea Fallen (Larva Parasitic on Nestling Birds) in the Puget Sound Region and Data on Two Undescribed Flies of Similar Habit
Vol 12, Page 373, Date 1919
-
Notes on the Biology of the Carabid Genera Brachynus, Galerita and Chlaenius
Vol 12, Page 382, Date 1919
-
Index of Volume XII
Vol 12, Page 391, Date 1919