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A new Lithobius from Colorado

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 3-4

February 6

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 5

Studies in South and Central American Acridinae (Orthoptera), with the descriptions of a new genus and six new species

Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1906, in volume 58, pages 10-50

Some cold-blooded vertebrates from the Florida keys

Published in Proc. Acad. Nat. Sci. Philadelphia, in 1906, in volume 58, pages 77-113

New, Rare or Little Known Scombroids, No. 3

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 114-122

April 3

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 176

A monograph of the genus Collocalia

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 177-212

Description of a new Australian Glycymeris

Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1906, in volume 58, pages 213-214

Additional new species of Polychaeta from the North Pacific

Published in Proc. Acad. Nat. Sci. Philadelphia, in 1906, in volume 58, pages 217-260

May 1

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 261

Records and descriptions of non-Saltatorial Orthoptera from British-Guiana

Published in Proceedings of the Academy of Natural Sciences of Philadelphia (Proc. Acad. Nat. Sci. Philad.), in 1906, in volume 58, pages 262-278

Descriptions of five new species of Orthoptera from Tonkin

Published in Proceedings of the Academy of Natural Sciences of Philadelphia (Proc. Acad. Nat. Sci. Philad.), in 1906, in volume 58, pages 279-292

A contribution to the knowledge of the Orthoptera of Montana, Yellowstone Park, Utah and Colorado

Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1906, in volume 58, pages 358-418

October 2

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 429

Weather Predictions

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 430

On Some Fishes of Western Cuba

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 484-488

New Oribatidæ from the United States

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 490-500

December 4

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 509

Mollusca of the Ozarkian Fauna

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 529-567

Report of the Recording Secretary

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 580-581

Report of the Librarian

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 582-586

Council for 1907

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 593-594

Additions to Museum

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, pages 595-601

Further Knowledge of Some Heterognathous Fishes. Part I

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1906, in volume 58, issue 2, pages 293-351

On some Reptilian freaks from Indiana

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1906, in volume 1906, pages 419-422