A Simplified Method for Analysis of Clines; Geographic Variation in the Hognose Snake Heterodon platyrhinos Latreille
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The Courtship Behavior of Ambystoma macrodactylum croceum
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Status of the Teiid Lizards Euspondylus strangulatus Cope and Euspondylus festae Peracca
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A New Black-Headed Snake (Tantilla) from Southwestern Texas
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Cnemidophorus inornatus, the Valid Name for the Little Striped Whiptail Lizard, with the Description of an Annectant Subspecies
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Comparative Accumulation of Radioactive Zinc in Young Rainbow, Cutthroat and Brook Trout
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Emendated Generic Names in Berg's Classification of Fishes
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The Bornean Cyprinoid Fishes of the Genus Gastromyzon Günther
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The Time and Order of Formation of Sensory Canals in the Fishes Ophicephalus punctatus (Ophicephalidae) and Wallago attu (Siluridae)
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Hybridization versus Integradation: An Inquiry into the Relationship of Two Cyprinid Fishes
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A New Species of Flatfish, Monolene megalepis, from Puerto Rico and the Western Caribbean Sea
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Developmental Temperature Tolerances of Four Etheostomatine Fishes Occurring in Texas
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Differences in the Incubation Period of Two Populations of Etheostoma lepidum
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Evolution of Secondary Sexual Characters and Sexual Behavior Patterns in a Family of Viviparous Fishes (Cyprinodontiformes: Poeciliidae)
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Studies on Fishes of the Family Ophidiidae: VI. Two New Genera and a New Species from American Waters
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The Status of Typhlops silus Legler
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Variations in Concentrations of a Metachromatic Staining Anticoagulant in Plasma of the Turtle, Pseudemys scripta elegans
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The Running Speeds of the Lizards Dipsosaurus dorsalis and Callisaurus draconoides
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A Device for Measuring Larval and Juvenile Fishes
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Banded Color Phases of Two Pelagic Fishes, Coryphaena hippurus and Katsuwonus pelamis
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Recaptures of Tagged Spiny Dogfish, Squalus acanthias
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Size Distribution by Depth of the Longfin Hake, Phycis chesteri
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Spawning Behavior and Egg Raft Morphology of the Ocellated Fringed Frogfish, Antennarius nummifer (Cuvier)
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Occurrence of a Natural Intergeneric Etheostomatine Fish Hybrid
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Life History Notes on the Roughtail Stingray, Dasyatis centroura (Mitchill)
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Salinity and Size in Marine Fishes
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Grass Pickerel, Esox americanus vermiculatus, with Supernumary Fins
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Winter Abundance of Arctogadus glacialis in the Polar Basin
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Observations on the Spawning of Surgeonfishes (Acanthuridae) in the Society Islands
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The Nomenclature of Xyrichtys Cuvier, 1815
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Food Habits of Two Dasyatid Rays in Delaware Bay
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A Technique for Fish Photography
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Notes on a Second Record of Branchiostoma from Louisiana
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Artificial Hybridization of Some Atherinid Fishes
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Phylax Telescopus VI
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Editorial Notes and News
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Margaret Hamilton Storey, (1900-1960)
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Books Received
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Back Matter
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