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Contents: Synopsis of the Eels of the Family Xenocongridae, by James Bohlee; Notes on Peruvian Birds II, by James Bond; Studies on the Genus “Olivella,” by Axel Olsson; The South African Gastropod Genus “Burnupena”, by Virginia Orr; Inland Mollusca of N. Mexico, III. Polygyridae and Potadominae, by Henry Pilsbry; The Components of “Tetrix ornata”, by James Rehn and Harold Gant, Jr.; On “Tetrix brunneri” and a New Species of “Tetrix” from CA (Orthoptera; Acridoidea; Tetrigidae), by James Rehn and Harold Grant, Jr.; Helicoid Cyclophorid Mollusks of Mexico, by Alan Solem; The Genus “Naesiotus,” with Descriptions of New Sepcies and Notes on Other Peruvian Bulimulidae, by Wolfgang Weyrauch. Illustrations.
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