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The wasps of the genus Plenoculus (Hymenoptera: Sphecidae, Larrinae)
Volume 31, Page 1
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Interpopulation variation in the colubrid snake Natrix pryeri from the Riukiu Islands, with description of a new subspecies
Volume 31, Page 51
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Further records of Neotropical Tabanidae (Diptera) mostly from Peru
Volume 31, Page 69
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Mantle cavity, habits, and habitat in the blind limpet, Lepeta concentrica Middendorff
Volume 31, Page 103
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Further observations on Hipponix antiquatus with notes on North Pacific pulmonate limpets
Volume 31, Page 111
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Revision der chilenischen Misolampini: Gattungen Heliofugus Guerin und Myrmecodema Gebien (= Myrmecosoma Germain) (Coleoptera: Tenebrionidae)
Volume 31, Page 121
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First records of the Echeneidid Remilegia australis (Bennett) from California, with meristic data
Volume 31, Page 169
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On some earthworms of Eisen's collection
Volume 31, Page 185
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Pyrgomorphidae (Orthoptera: Acridoidea) collected in Africa by E. S. Ross and R. E. Leech, 1957-1958, with descriptions of new species
Volume 31, Page 227
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Flora and vegetation of Clipperton Island
Volume 31, Page 249
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Remarks on the colubrid genus Chilomeniscus (Serpentes : Colubridae)
Volume 31, Page 309
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Third contribution to the herpetology of Afghanistan
Volume 31, Page 329
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Interpretation of the invertebrate fauna from the Upper Pleistocene Battery Formation near Crescent City, California
Volume 31, Page 341
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New and rare diatoms from Oregon and Washington
Volume 31, Page 349
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Remarks on the zoogeography of Philippine terrestrial snakes
Volume 31, Page 369
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Amphibians and reptiles from Iran
Volume 31, Page 417
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Two new genera of leptodactylid frogs from Colombia
Volume 31, Page 499
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A new spine-throated grasshopper from the White Mountains of California (Orthoptera: Acrididae: Cyrtacanthacridinae)
Volume 31, Page 503
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Nemerteans from California and Oregon
Volume 31, Page 515
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Phyllophaga saylori, n. sp., from Nuevo Leon, Mexico (Coleoptera: Scarabaeidae)
Volume 31, Page 559
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Osteological characteristics and affinities of the hexagrammid fishes, with a synopsis
Volume 31, Page 563
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Re-establishment of the northern elephant seal (Mirounga angustirotris) off central California
Volume 31, Page 601
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On Amphisbaena heathi Schmidt and A. carvalhoi, new species, small forms from the northeast of Brazil (Amphisbaenia: Reptilia)
Volume 31, Page 613
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Behavior and natural reactions of the northern anchovy, Engraulis mordax Girard, under the influence of light of different wave lengths and intensities and total darkness
Volume 31, Page 631