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1922
Descriptions and Records of Bees - XCIV, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - XCV, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - XCVI, T. D. A. Cockerell; Annals and Magazine of Natural History
New Bees from the Madeira Islands. (Hym.), T. D. A. Cockerell; Proceedings of the Entomological Society of Washington
Notes on Some Western Bees, T. D. A. Cockerell; American Museum Novitates
Some Canadian Bees, T. D. A. Cockerell; The Canadian Entomologist
Two New Subgenera of North American Bees, T. D. A. Cockerell; American Museum Novitates
Hymenopterologische Ergebnisse einer Wissenschaftlichen Studienreise nach der Türkei und Kleinasien (mit Ausschluß des Amanusgebirges)., Josef Fahringer; Archiv für Naturgeschichte
Morphologische und Biologische Untersuchungen der Putzapparate der Hymenopteren Summary, Johannes Gennerich; Archiv für Naturgeschichte. Abteilung A
Observations on Xylocopa and Lithurgus (Hymenoptera), W. M. Giffard; Proceedings of the Hawaiian Entomological Society
Ecological and Behavior Notes on Missouri Insects, Phil Rau; Transactions of the Academy of Science of St. Louis
The Bumblebees of Petrograd Goubernia, A. Skorikov
Identity of the Hawaiian Carpenter Bee of the Genus Xylocopa (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society
1921
Wie ist Tiphia rufiventris Pz. Zu deuten?, J. D. Alfken; Jahresbericht d. Ent. Ver. Bremen
Real Sociedad Espanola De Historia Natural, Enrique Asensio
Sur quelques Hymenopteres Melliferes des environs de Paris, R. Benoist; Bulletin de la Société Entomologique de France
Description d'une Espece Congolaise Du Genre "Montezumia" (Hymenopteres, Vespides) suivie de remarques taxonomiques sur ce groupe, Joseph Bequaert; Revue Zoologique Africaine
On Eumenes Alluaudi Perez, a Precinctive Wasp of the Seychelles (Hymenoptera), Joseph Bequaert; Psyche
Australian Bees in the Queensland Museum, T. D. A. Cockerell; Memoirs of the Queensland Museum
Descriptions and Records of Bees - XC, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - XCI, T. D. A. Cockerell; Annals and Magazine of Natural History
I. -Fossil Arthropods in the British Museum. -V. Oligocene Hymenoptera from the Isle of Wight, T. D. A. Cockerell; Annals and Magazine of Natural History
Some Parasitic Megachilid Bees of the Western United States, T. D. A. Cockerell; American Museum Novitates
The Epeoline Bees of the American Museum Rocky Mountain Expeditions, T. D. A. Cockerell; American Museum Novitates
Western Bees Obtained by the American Museum Expeditions, T. D. A. Cockerell; American Museum Novitates
Eine Hymenopteren-Ausbeute aus dem Amanusgebirge. (Kleinasien und Nord-Syrien, südl. Armenien.), Josef Fahringer and Heinrich Friese; Archiv für Naturgeschichte
Note on the Habits of the Bee, Anthidium Manicatum, E. E. Green; Proc. Ent. Soc. Lond.
Notes on the Hawaiian Bees of the Genus Megachile (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society
1920
Andrena Enslini, eine neue deutsche Andrena-Art, J. D. Alfken
Eine neue deutsche Halictus-Art, J. D. Alfken
Zum Problem der Bienenzelle, Ludwig Armbruster; Bucherei fur Bienenkunde
Notes Supplementaires Sur Les Bourdons de la Belgique, F. J. Ball; Annales de la Societe Entomologique de Belgiqua
Hymenoptera Collected Near Boston, Mass., with Descriptions of a Variety of Bombus affinis, Joseph Bequaert; Psyche
Scientific Results of the Katmai Expedition of the National Geographic Society XIII. Bees and Wasps, Joseph Bequaert; The Ohio Journal of Science
Beiträge zur Kenntnis deutscher Bienen, Paul Blüthgen; Stettiner Entomologische Zeitung
Zu Psithyrus vestalis Geoffr. und bohemicus Seidl (distinctus Pérez) (Hym.)., Paul Blüthgen; Separatabdruck aus Entomologische Mitteilungen
Descriptions Records and Notes on North American Nyssonidae (Hymenoptera), James Chester Bradley; Transactions of the American Entomological Society
On Scolia bicincta Fab. and Scolia undata Klug (Hymenoptera, Scoliidae), C. S. Brimley; Entomological News
A New Leaf-Cutting Bee from the Hawaiian Islands, T. D. A. Cockerell; The Canadian Entomologist
Descriptions and Records of Bees - LXXXIX, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - LXXXVIII, T. D. A. Cockerell; Annals and Magazine of Natural History
Malayan Bees, T. D. A. Cockerell; The Philippine Journal of Science
On South African Bees, Chiefly Collected in Natal, T. D. A. Cockerell; Annals of the Durban Museum
On South African Bees, Chiefly Collected in Natal, T. D. A. Cockerell; Annals of the Durban Museum
Some Bees from Panay, T. D. A. Cockerell; The Philippine Journal of Science
Some Bees from Sandakan, Borneo, T. D. A. Cockerell; The Philippine Journal of Science
Some Indian Bees of the Genus Andrena, T. D. A. Cockerell; The Entomologist
Some Neotropical Meliponid Bees, T. D. A. Cockerell; Bulletin of the American Museum of Natural History
Supplementary Notes on Philippine Bees, T. D. A. Cockerell; The Philippine Journal of Science
Supplementary Notes on the Social Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
The Phoresy of Antherophagus, Horace Donisthorpe; The Entomologist's Record
Observaciones Sobre la Procedencia Espanola de Muchos Apidos Descritos por Perez en "Espéces Nouvelles de Melliferes de Barbarie", José María Dumset Y Alonso; Boletín de la Real Sociedad Española de Historia Natural
1919
Halictinae de Cuba, Carl F. Baker; Primer Informe Annual de la Estacion Central Agronomica de Cuba
New Psammocharidae and Philanthidae, Nathan Banks; The Canadian Entomologist
Notes and Descriptions of Some Fossorial Hymenoptera, Nathan Banks; The Canadian Entomologist
The Psammocharidae of Western North America, Nathan Banks; Bulletin of the Museum of Comparative Zoology
The Nearctic Psammocharids of the Genus Aporinellus Banks, Joseph Bequaert; Psyche
Die Bienenfauna Pommerns, Paul Blüthgen; Stettiner Entomologische Zeitung
A New Tachytes from Georgia (Hymenop.: Larridae), James Chester Bradley; Entomological News
The Synonymy and Types of Certain Genera of Hymenoptera, James Chester Bradley; Transactions of the Entomological Society of London
Miscellaneous Notes on Hymenoptera With Descriptions of New Genera and Species, John Colburn Bridwell; Proc. Haw. Ent. Soc.
A New Genus of Bees from Peru (Hym.), T. D. A. Cockerell; Entomological News
Bees in the Collection of the United States National Museum. -3, T. D. A. Cockerell; Proceedings of the United States National Museum
Descriptions and Records of Bees - LXXXIV, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - LXXXVI, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - LXXXVII, T. D. A. Cockerell; Annals and Magazine of Natural History
Neocorynura, a Genus of Halictine Bees (Hym.), T. D. A. Cockerell; Entomological News
New and Little-Known American Bees, T. D. A. Cockerell; The Canadian Entomologist
Philippine Bees of the Genus Nomia, T. D. A. Cockerell; The Philippine Journal of Science
The Bees of Gold Hill, Colorado, T. D. A. Cockerell; The Canadian Entomologist
The Bees of Peaceful Valley, Colorado, T. D. A. Cockerell; Journal of the New York Entomological Society
The Bees of the Rocky Mountain National Park (Hymenop.), T. D. A. Cockerell; Entomological News
The Black Halictine Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
The Metallic-Colored Halictine Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
The Philippine Bees of the Families Anthophoridæ and Melectidæ, T. D. A. Cockerell; The Philippine Journal of Science
The Philippine Bees of the Family Nomadidæ, T. D. A. Cockerell; The Philippine Journal of Science
The Prosopidæ, or Obtuse-Tongued Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
The Social Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
The Sphecodine Bees of the Philippine Islands, T. D. A. Cockerell; The Philippine Journal of Science
Contributions to a Knowledge of the Natural Enemies of Phyllophaga, John J. Davis; Bulletin of the State of Illinois Department of Registration and Education
1918
Prosopis pfankuci, eine neue deutsche Prosopis - Art., J. D. Alfken; Sounderabdruck der Abh. Nat. Ver. Bremen.
Eine neue deutsche Halictusart (Hal. viridiaeneus nov. spec.) (Hym.), Paul Blüthgen; Deutsch. Ent. Zeitschr.
A Group of American Halictine Bees Simulating the Old-World Genus Nomioides, T. D. A. Cockerell; The Canadian Entomologist
A Remarkable New Bee of the Genus Oxea (Hym.), T. D. A. Cockerell; Entomological News
Bees from British Guiana, T. D. A. Cockerell; Bulletin of the American Museum of Natural History
Descriptions and Records of Bees - LXXIX, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - LXXX, T. D. A. Cockerell; Annals and Magazine of Natural History
Descriptions and Records of Bees - LXXXII, T. D. A. Cockerell; Annals and Magazine of Natural History
Neotropical Bees, Principally Collected by Professor Bruner in Argentina, T. D. A. Cockerell; Transactions of the American Entomological Society
New Halictine Bees from Chile, T. D. A. Cockerell; The Canadian Entomologist
Some Bees Collected in Queensland, T. D. A. Cockerell; Memoirs of the Queensland Museum
Some Bees of the Genus Panurginus, T. D. A. Cockerell; Entomological News
Some South American Bees, T. D. A. Cockerell; The Canadian Entomologist
The Bee-Genus Brachynomada, T. D. A. Cockerell; The Canadian Entomologist
The Bembicine Wasps (Hym.), T. D. A. Cockerell; Entomological News
The Philippine Journal of Science, T. D. A. Cockerell, Elizabeth Robinson, and A. E. Wileman; The Philippine Journal of Science
Notes Biologiques Sur Les Mylabres, Auguste Cros; Annales de la Société Entomologique de France
Notes Biologique sur les Mylabres, Auguste Cros; Ann. de la Soc. Ent. de France
Lectotypes of the Species of Hymenoptera (Except Apoidea) Described by Abbé Provancher, A. B. Gahan and S. A. Rohwer; The Canadian Entomologist
1917
The Production of Alfalfa Seed in Southern Idaho, L. C. Aicher