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February 1st
Volume 11, Page 55
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Ichthyological notices
Volume 11, Page 56
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Catalogue of the Coleoptera of Fort Tejon, California
Volume 11, Page 69
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March 1st
Volume 11, Page 90
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March 22d
Volume 11, Page 91
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Notes on coluber calligaster of Say, and a description of a new species of Serpents in the collection of the north Western University of Evanston,Ill
Volume 11, Page 98
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April 5th
Volume 11, Page 109
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On the primary divisions of the Salamandridae, with descriptions of two new species
Volume 11, Page 122
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On the genus Callionymus of authors
Volume 11, Page 128
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On Dactyloscopus and Leptoscopus, two new genera of the family of Uranoscopidae
Volume 11, Page 132
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Notes on a collection of Japanese fishes, made by Dr. J. Morrow
Volume 11, Page 144
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May 10th
Volume 11, Page 150
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Descriptions of twenty one new species of exotic Unionidae
Volume 11, Page 151
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Description of a third genus of Hemirhamphinae
Volume 11, Page 155
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June 7th
Volume 11, Page 161
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June 21st
Volume 11, Page 164
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Description of a new genus of Salarianae, from the West Indies
Volume 11, Page 168
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July 12th
Volume 11, Page 177
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Description of a type of gobioids intermediate between Solinae and Tridentigerinae
Volume 11, Page 195
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Description of new South American type of siluroids, allied to Callophysus
Volume 11, Page 196
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New genera and species of North American Tipulidae with short palpi, with an attempt at a new classification of the tribe
Volume 1859, Page 197
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September 20th
Volume 11, Page 255
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Additions to the Coleopterous Fauna of Northern California and Oregon
Volume 11, Page 281
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Notes and descriptions of foreign reptiles
Volume 1859, Page 294
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Catalogue of the venomous serpents in the Museum of the Academy of Natural Sciences of Philadelphia, with notes on the families, genera and species
Volume 1859, Page 332
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Elections in 1859
Volume 11, Page 354
