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Geographic variation in birds with especial reference to the effects of humidity
Vol 1, Iss 1, Page 1
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A contribution to the ecology of the adult hoatzin
Vol 1, Iss 2, Page 45
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An ornithological reconnaissance of Northeastern Venezuela
Vol 1, Iss 3, Page 67
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New species of insects collected by C. William Beebe in South America-- I. Mallophaga from the hoatzin
Vol 1, Iss 4, Page 117
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New species of insects collected by C. William Beebe in South America—II. A new mantis from British Guiana
Vol 1, Iss 4, Page 123
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New species of insects collected by C. William Beebe in South America--III. New species of Lepidoptera from British Guiana
Vol 1, Iss 4, Page 125
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Racket formation in tail-feathers of the motmots
Vol 1, Iss 5, Page 140
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Three cases of supernumerary toes in the broad-winged hawk, Buteo platypterus (Vieill.)
Vol 1, Iss 6, Page 150
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The undescribed juvenal plumage of the Yucatan jay. Cissilopha yucatanica (Dubois)
Vol 1, Iss 7, Page 153
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The northern elephant seal, Macrorhinus angustirostris, Gill
Vol 1, Iss 8, Page 159
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Some common affections of the respiratory and digestive organs among primates
Vol 1, Iss 9, Page 174
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New Blood Pheasants
Vol 1, Iss 10, Page 189
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The feeding habits of serpents
Vol 1, Iss 11, Page 197
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Notes on the ontogeny of the white ibis, Guara alba
Vol 1, Iss 12, Page 241
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Specialization of tail down in certain ducks
Vol 1, Iss 13, Page 249
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Effect of a postponed moult upon the sequence of plumage in certain passerine birds
Vol 1, Iss 14, Page 253
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Preliminary pheasant studies
Vol 1, Iss 15, Page 261
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The porpoise in captivity
Vol 1, Iss 16, Page 289
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Review of the genus Gennaeus
Vol 1, Iss 17, Page 303
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Notes on Costa Rican birds
Vol 1, Iss 18, Page 325
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Natural history of the whale shark, Rhineodon typus Smith
Vol 1, Iss 19, Page 349
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Some new species of ectoparasitic trematodes
Vol 1, Iss 20, Page 395