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Descriptions of new Lepidoptera from Mexico
Volume 51, Page 1
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Descriptions of miscellaneous North-American chalcidoid Hymenoptera.
Volume 51, Page 39
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Some Diptera (Microdon) from nests of ants
Volume 51, Page 53
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On the geographical forms of the Philippine elegant titmouse, Pardaliparuselegans (Lesson), with descriptions of three new subspecies
Volume 51, Page 57
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Report on Arachnida collected by Messrs. Curie, Caudell, and Dyar in British Columbia
Volume 51, Page 67
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New brachiopods of the genus Spirifer from the Silurian of Maine
Volume 51, Page 73
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Notes on alunite, psilomlanite, and titanite
Volume 51, Page 81
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Some American fossil insects
Volume 51, Page 89
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Descriptions of two extinct mammals of the order Xenarthra from the Pleistocene of Texas
Volume 51, Page 107
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New North-American Hymenoptera of the family Eulophidae.
Volume 51, Page 125
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Report on the Japanese macrouroid fishes collected by the United States fisheries steamer "Albatross" in 1906, with a synopsis of the genera
Volume 51, Page 135
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New and little-known heteropterous Hemiptera in the United States National Museum
Volume 51, Page 215
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A review of the fossil plants in the United States National Museum from the Florissant lake beds at Florissant, Colorado, with descriptions of new species and list of type-specimens
Volume 51, Page 241
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New genera and species of muscoid flies
Volume 51, Page 299
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A recently-found iron meteorite from Cookeville, Putnam County, Tennessee
Volume 51, Page 325
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Two new fossil plants from the Triassic of Pennsylvania
Volume 51, Page 327
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Two new land shells from the western States
Volume 51, Page 331
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A contribution to our knowledge of the whiteflies of the subfamily Aleurodinae (Aleyrodidae)
Volume 51, Page 335
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Notes on the Whitfield County, Georgia, meteoric irons, with new analyses
Volume 51, Page 447
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A Lower Jurassic flora from the upper Matanuska Valley, Alaska
Volume 51, Page 451
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Studies of weevils (Rhynchophora) with descriptions of new genera and species
Volume 51, Page 461
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A new rnollusk of the genus Pisidium from Alaska, with field notes by G. Dallas Hanna
Volume 51, Page 475
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The Javanese chalcidoid Hymenoptera.
Volume 51, Page 479
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A contribution to the invertebrate fauna of the Oligocene beds of Flint River, Georgia
Volume 51, Page 487
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A newly found meteoric stone from Lake Okechobee, Florida
Volume 51, Page 525
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A revision of the rotatorian genera Lepadella and Lophocharis with descriptions of five new species
Volume 51, Page 527
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A new genus and three new species of parasitic isopod crustaceans
Volume 51, Page 569
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Summary of the mollusks of the family Alectrionidae of the west coast of America
Volume 51, Page 575
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Descriptions of seven new species of red spiders
Volume 51, Page 581
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Paraphernalia of a Korean sorceress in United States National Museum
Volume 51, Page 591
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Mollusks from the type locality of the Choctawhatchee marl
Volume 51, Page 599
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The Californian land shells of the Epiphragmophora traskii group
Volume 51, Page 609
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A generic synopsis of the coccinellid larvae in the United States National Museum, with a description of the larva of Hyperaspis binotata Say
Volume 51, Page 621
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[Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910..No. 35.] New species and varieties of Forminifera from the Philippines and adjacent waters
Volume 51, Page 651