Published in Ibis, in 1897, in volume 3, issue 3, pages 400-422

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Published in Ibis, in 1898, in volume 4, issue 2, pages 216-228

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Published in Ibis, in 1900, in volume 6, issue 3, pages 517-525

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Published in Palaeontology, in 1974, in volume 17, issue 2, pages 409-421

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Published in Brimleyana, in 1983, in volume 9, pages 111-122

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Published in The Great Basin Naturalist, in 1992, in volume 52, issue 1, pages 29-34

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Published in Nautilis, in 1925, in volume 38, pages 83-85

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Published in Biol Bull, in 1991, in volume 180, pages 154-166

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Published in Proc. zool soc. Lond, in 1893, in volume 1893, pages 582-584

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Published in Proceedings of the Malacological Society of London, in 1904, in volume 6, issue 1, pages 66-67

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Published in Journal of The New York Entomological Society, in 1977, in volume 85, issue 4, pages 162-208

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Published in Nautilis, in 1927, in volume 40, pages 130-131

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Published in Forktail, in 2015, in volume 31, pages 1-12

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Published in Nautilis, in 1925, in volume 38, pages 85-86

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Published in Proceedings of the Malacological Society of London, in 1923, in volume 15, issue 6, pages 294-298

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Published in Annals and Magazine of Natural History, in 1901, in volume 8, pages 333-336

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Published in Annals and Magazine of Natural History, in 1901, in volume 8, pages 161-164

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Published in Proceedings of The Zoological Society of London, in 1858, in volume 1858, pages 360-367

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Published in Proceedings of the Malacological Society of London, in 1897, in volume 2, issue 6, pages 242-244

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Published in Proceedings of the Malacological Society of London, in 1907, in volume 7, issue 5, pages 264-265

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Published in Annals And Magazine of Natural History, in 1855, in volume 16, pages 298

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Published in Torreya, in 1912, in volume 12, issue 1, pages 16-22

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Published in Journal of Raptor Research, in 1995, in volume 29, issue 1, pages 46

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Published in Proceedings of the Malacological Society of London, in 1902, in volume 5, issue 2, pages 180-182

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Published in Proceedings of the Malacological Society of London, in 1901, in volume 4, issue 4, pages 183

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Published in Proceedings of the Malacological Society of London, in 1917, in volume 12, issue 4, pages 133-134

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Published in Annals And Magazine of Natural History, in 1901, in volume 7, pages 137-140

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Published in Journal of Raptor Research, in 2003, in volume 37, issue 1, pages 85-86

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Published in Journal of Raptor Research, in 1995, in volume 29, issue 1, pages 48

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Published in Proceedings of the Malacological Society of London, in 1907, in volume 7, issue 5, pages 243

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Published in Journal of The New York Entomological Society, in 1978, in volume 86, issue 4, pages 274-330

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Published in Proceedings of the Malacological Society of London, in 1899, in volume 3, issue 4, pages 187-204

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Published in Proceedings of the Malacological Society of London, in 1907, in volume 7, issue 5, pages 261-263

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Published in Rhodora, in 1919, in volume 21, issue 246, pages 114-116

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Published in Rhodora, in 1919, in volume 21, issue 243, pages 72

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Published in Rhodora, in 1915, in volume 17, issue 204, pages 234

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Published in Rhodora, in 1918, in volume 20, issue 233, pages 97-98

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Published in Entomologist's Record and Journal of Variation, in 1987, in volume 99, issue 11-12, pages 270

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Published in Veliger, in 1976, in volume 18, pages 353-356

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Published in Proceedings of the Malacological Society of London, in 1908, in volume 8, issue 2, pages 62-63

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Published in Proceedings of the Malacological Society of London, in 1909, in volume 8, issue 5, pages 268

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Published in Proceedings of the Malacological Society of London, in 1917, in volume 12, issue 4, pages 124

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Published in Proceedings of the Malacological Society of London, in 1914, in volume 11, issue 1, pages 3

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Published in Annals And Magazine of Natural History, in 1841, in volume 7, pages 201-206

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Published in Annals And Magazine of Natural History, in 1856, in volume 17, pages 401-402

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Published in Rhodora, in 1907, in volume 9, issue 97, pages 10-11

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Published in Rhodora, in 1908, in volume 10, issue 119, pages 206

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Published in Rhodora, in 1918, in volume 20, issue 234, pages 116

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Published in Rhodora, in 1920, in volume 22, issue 263, pages 182-183

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Published in Rhodora, in 1919, in volume 21, issue 252, pages 218-219

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