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A review of the genus Xiphocolaptes of Lesson
Vol 12, Iss 761, Page 1
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A review of the genus Sclerurus of Swainson
Vol 12, Iss 762, Page 21
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Descriptive notes of new genera and species from the Lower Cambrian or Olenellus zone of North America
Vol 12, Iss 763, Page 33
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New North American Acrididae, found North of the Mexican boundary
Vol 12, Iss 764, Page 47
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Contributions to the natural history of the Commander Islands
Vol 12, Iss 765, Page 83
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Description of two new species of snakes from California
Vol 12, Iss 766, Page 95
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Scientific results of explorations by the U. S. Fish Commission steamer Albatross. No. I..Birds collected on the Galapagos Islands in 1888
Vol 12, Page 101
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Scientific results of explorations by the U. S. Fish Commission steamer Albatross. No. II..Birds collected on the Island of Santa Lucia, West Indies, the Abrolhos Islands, Brazil, and at the Straits of Magellan, in 1887-'88
Vol 12, Page 129
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Scientific results of explorations by the U.S. Fish Commission Steamer Albatross
Vol 12, Page 141
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Descriptions of new species of fishes collected at the Galapagos Islands and along the coast of the United States of Colombia, 1887-88, by the U.S. Fish Commission steamer 'Albatross'
Vol 12, Page 149
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Scientific Results of Explorations by the U. S. Fish Commission Steamer Albatross. No. V.– Annotated Catalogue of the Insects Collected in 1887-88.
Vol 12, Page 185
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Arachnida in Scientific Results of Explorations by the U.S. Fish Commission Steamer 'Albatross'
Vol 12, Page 207
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Myriopoda in the Scientific Results of Explorations by the U.S. Fish Commission Steamer 'Albatross'
Vol 1889, Page 211
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Scientific results of explorations by the U. S. Fish Commission steamer Albatross. No. VII..Preliminary report on the collection of Mollusca and Brachiopoda obtained in 1887-'88
Vol 12, Page 219
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Description of a new genus and species of inarticulate brachiopod from the Trenton limestone
Vol 12, Iss 775, Page 365
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The archaeology of the Potomac tide-water region
Vol 12, Iss 776, Page 367
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The palaeolithic period in the District of Columbia
Vol 12, Iss 777, Page 371
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Notes on a third collection of birds made in Kauai, Hawaiian Islands, by Valdemar Knudsen
Vol 12, Iss 778, Page 377
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Descriptions of new Ichneumonidae in the collection of the U. S. National Museum
Vol 12, Iss 779, Page 387
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Description of the yellow-finned trout of Twin Lakes, Colorado
Vol 12, Iss 780, Page 453
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Contributions toward a monograph of the Noctuidae of temperate North America.revision of some taeniocampid genera
Vol 12, Page 455
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Catalogue of the described Araneae of temperate North America
Vol 12, Iss 782, Page 497
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Notes on the serpentinous rocks of Essex County, New York; from Aqueduct Shaft 26, New York City; and from near Easton, Pennsylvania
Vol 12, Iss 783, Page 595
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A revision of the genus Araucarioxylon of Kraus, with compiled descriptions and partial synonymy of the species
Vol 12, Iss 784, Page 601
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Notes on North American crayfishes.family Astacidae
Vol 12, Page 619
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Description of two new species of bats.Nyctinomus europs and N. orthotis
Vol 12, Page 635
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Description of a new lizard from Lower California
Vol 12, Iss 788, Page 643
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Scientific results of explorations by the U. S. Fish Commission steamer Albatross. No IX, .Catalogue of fishes collected at Port Castries, St, Lucia, by the steamer Albatross, November, 1888
Vol 12, Page 645