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The embryological origin of pigment cells in platyfish-swordtail hybrids
Vol 41, Iss 1, Page 1, Date 1956-04-23
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A new species of frog from Kartabo, British Guiana
Vol 41, Iss 2, Page 11, Date 1956-04-23
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Notes on the behavior and habits of the medusa, Olindias phosphorica tenuis Fewkes
Vol 41, Iss 3, Page 13, Date 1956-04-23
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Observations on evisceration and visceral regeneration in the sea-cucumber, Actinopyga agassizi Selenka
Vol 41, Iss 4, Page 17, Date 1956-04-23
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Hematology of healthy and virus-diseased sockeye salmon, Onchorhynchus terka
Vol 41, Iss 5, Page 27, Date 1956-04-23
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Geographic variation in the respiratory metabolism and temperature coefficient in tropical and temperate forms of the fiddler crab, Uca pugnax
Vol 41, Iss 6, Page 39, Date 1956-04-23
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Visual, chemical and sound stimuli as cues in the sex discriminatory behavior of the gobiid fish Bathygobius soporator
Vol 41, Iss 7, Page 49, Date 1956-09-17
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Patterns of herd behavior in free-ranging elk of Wyoming, Cervus canadensis nelsoni
Vol 41, Iss 8, Page 65, Date 1956-09-17
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New frogs from Ecuador and southwestern Colombia
Vol 41, Iss 9, Page 73, Date 1956-09-17
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Neonesthes gnathoprora, a new species of astronesthid fish from the Atlantic Ocean
Vol 41, Iss 10, Page 81, Date 1956-09-17
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A sand launce, Ammodytes, in the coelom of a weakfish, Cynoscion, with earlier records of similar phenomenon
Vol 41, Iss 11, Page 85, Date 1956-09-17
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The behavior and social relations of the gibbon (Hylobates lar) observed under restricted free-range conditions
Vol 41, Iss 12, Page 89, Date 1956-11-23
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Thyroid follicles in the head kidney of the goldfish, Carassius auratus (Linnaeus)
Vol 41, Iss 13, Page 101, Date 1956-11-23
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Ecology, behavior and population dynamics of the Wyoming or Rocky Mountain moose, Alces alces shirasi
Vol 41, Iss 14, Page 105, Date 1956-11-23
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Influence of light and darkness on the pineal body in Astyanax mexicanus (Filippi)
Vol 41, Iss 15, Page 119, Date 1956-11-23
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Aeration in aquaria
Vol 41, Iss 16, Page 129, Date 1956-12-31
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Reproduction in the king cobra, Ophiophagus hannah Cantor
Vol 41, Iss 17, Page 145, Date 1956-12-31
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An intricate genetic system that controls nine pigment cell patterns in the platyfish
Vol 41, Iss 18, Page 153, Date 1956-12-31
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Introduced mammals and their influence in native biota
Vol 41, Iss 19, Page 163, Date 1956-12-31