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Two new polecats related to Mustela larvata
Vol 26, Page 1, Date 1913
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A revision of the American species of Peripatus
Vol 26, Page 15, Date 1913-01-18
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Ooperipatus spenceri, nom. nov
Vol 26, Page 19, Date 1913
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Bird migration in the District of Columbia
Vol 26, Page 21, Date 1913
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Description of a new Uta from Nevada.
Vol 26, Page 27, Date 1913
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Five new mammals from tropical America
Vol 26, Page 31, Date 1913
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Dichromatism in Neotoma mexicana fallax from Costilla County, Colorado
Vol 26, Page 35, Date 1913
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A list of plants collected on St. Vincent Island, Florida
Vol 26, Page 39, Date 1913
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Description of a new subspecies of Rana pretiosa from Nevada
Vol 26, Page 53, Date 1913
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The name of the Rocky Mountain sheep
Vol 26, Page 57, Date 1913
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A new hummingbird of the genus Chlorostilbon from Brazil
Vol 26, Page 63, Date 1913
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A new generic name for the Asiatic tapir
Vol 26, Page 65, Date 1913
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A new subspecies of nun bird from Panama
Vol 26, Page 67, Date 1913
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A new lizard from Porto Rico.
Vol 26, Page 69, Date 1913
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A new pteropine bat from Luzon
Vol 26, Page 73, Date 1913
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The scales of the simenchelyid, ophidiid, brotulid and bregmacerotid fishes
Vol 26, Page 75, Date 1913
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Ellimma, a genus of fossil herrings
Vol 26, Page 79, Date 1913
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Some overlooked names of Sicilian mammals
Vol 26, Page 80, Date 1913
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The king rail of Cuba
Vol 26, Page 83, Date 1913
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A Peripatus from Guatemala
Vol 26, Page 87, Date 1913
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The scales of the blennioid fishes
Vol 26, Page 89, Date 1913
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The green heron of the Maldives
Vol 26, Page 93, Date 1913
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Natural history notes on some Beaufort, N.C, fishes, -1912
Vol 26, Page 97, Date 1913
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Two new Philippine fruit bats
Vol 26, Page 111, Date 1913-05-03
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A new shrew from Balistan
Vol 26, Page 113, Date 1913
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Five new plants from New Mexico
Vol 26, Page 115, Date 1913
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Novitates Florae Utahensis
Vol 26, Page 121, Date 1913
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Two new weasels from the United States
Vol 26, Page 123, Date 1913
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Notes on the pikas of Colorado
Vol 26, Page 125, Date 1913
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Ten new mammals from New Mexico
Vol 26, Page 129, Date 1913
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Six new ground squirrels of the Citellus mollis group from Idaho, Oregon, and Nevada
Vol 26, Page 135, Date 1913
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Description of a new weasel from Alabama
Vol 26, Page 139, Date 1913
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A revision of the crinoid family Mariametridae
Vol 26, Page 141, Date 1913
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Reptiles and amphibians from eastern Sudan.
Vol 26, Page 145, Date 1913
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On two new characins in the American Museum
Vol 26, Page 151, Date 1913
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The Bahama bam owl
Vol 26, Page 153, Date 1913
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A new bot-fly from reindeer
Vol 26, Page 155, Date 1913
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Two new bats of the genus Taphozous
Vol 26, Page 157, Date 1913
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Nine new Thysanoptera from the United States
Vol 26, Page 161, Date 1913
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Two new African birds
Vol 26, Page 167, Date 1913
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Preliminary diagnoses of apparently new birds from tropical America
Vol 26, Page 169, Date 1913
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Two new mouse opossums from Yucatan
Vol 26, Page 175, Date 1913
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Description of a collection of unstalked crinoids made by Captain Suenson in eastern Aia
Vol 26, Page 177, Date 1913
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A new bat from the eastern United States
Vol 26, Page 183, Date 1913
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The remarkable life-history of a new family (Micromalthidae) of beetles
Vol 26, Page 185, Date 1913
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Two new subspecies of North American beavers
Vol 26, Page 191, Date 1913
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A new Dodecatheon from New Mexico
Vol 26, Page 195, Date 1913
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Two new murine rodents from Baltistan
Vol 26, Page 197, Date 1913
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Descriptions of two new birds from Alabama
Vol 26, Page 199, Date 1913
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Some plants from New Mexico
Vol 26, Page 203, Date 1913
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The relative lengths of the large and small intestines in rodents
Vol 26, Page 205, Date 1913
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Parallelism in morphological characters and physiological characteristics in scolytoid beetles
Vol 26, Page 209, Date 1913
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A new bat from Tonkin
Vol 26, Page 213, Date 1913
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Three new subspecies of grasshopper mice
Vol 26, Page 215, Date 1913