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A review of the species of the Amblystomidae

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1868, in volume 19, pages 166-211

Created: 2010-06-27, modified: 2021-04-05

Jan. 7th, 1868

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 1

Created: 2013-03-02, modified: 2013-03-02

A Monograph of the Alcidæ

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 2-81

Created: 2013-03-02, modified: 2013-03-02

Feb. 4th

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 85-86

Created: 2013-03-02, modified: 2013-03-02

Descriptions of Some New Species of Diurnal Lepidoptera. Series III

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 87-91

Created: 2013-03-02, modified: 2013-03-02

March 10th

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 91

Created: 2013-03-02, modified: 2013-03-02

An examination of the Reptilia and Batrachia obtained by the Orton Expedition to Equador and the Upper Amazon, with notes on other species

Published in Proc. Acad. Nat. Sci. Philadelphia, in 1868, in volume 20, pages 96-140

Created: 2010-03-21, modified: 2021-04-05

Second supplement on some new Raniformia of the old World

Published in Proc. Acad. Nat. Sci. Philadelphia, in 1868, in volume 20, pages 138-139

Created: 2010-02-03, modified: 2021-04-05

Notes on Some Singular Forms of Chinese Species of Unio

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 145-146

Created: 2013-03-02, modified: 2013-03-02

Variations in Epigæa repens

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 153-156

Created: 2013-03-02, modified: 2013-03-02

Monœcism in Luzula campestris

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 156

Created: 2013-03-02, modified: 2013-03-02

June 9th

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 159

Created: 2013-03-02, modified: 2013-03-02

Descriptions of Seven New Species of Unio from North Carolina

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 160-161

Created: 2013-03-02, modified: 2013-03-02

Indication of an Elotherium in California

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 177

Created: 2013-03-02, modified: 2013-03-02

Notice of Some Vertebrate Remains from the West Indian Islands

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 178-180

Created: 2013-03-02, modified: 2013-03-02

July 21st

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 182-183

Created: 2013-03-02, modified: 2018-04-12

Notice of Some Extinct Cetaceans

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 196-197

Created: 2013-03-02, modified: 2013-03-02

Notice of American Species of Ptychodus

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 205-208

Created: 2013-03-02, modified: 2013-03-02

Synopsis of the Extinct Batrachia of North America

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 208-221

Created: 2013-03-02, modified: 2013-03-02

On Agaphelus, a Genus of Toothless Cetacea

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 221-227

Created: 2013-03-02, modified: 2013-03-02

Oct. 20th

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 227-228

Created: 2013-03-02, modified: 2013-03-02

Notice of Some American Leeches

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 229-230

Created: 2013-03-02, modified: 2013-03-02

Sixth Contribution to the Herpetology of Tropical America

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 305-313

Created: 2010-01-08, modified: 2021-04-05

Dec. 1st

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 313-314

Created: 2013-03-02, modified: 2013-03-02

Dec. 22d

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 314-315

Created: 2013-03-02, modified: 2013-03-02

Notice of Some Remains of Extinct Insectivora from Dakota

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 315-316

Created: 2013-03-02, modified: 2013-03-02

On the Seed Vessels of Forsythia

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 334

Created: 2013-03-02, modified: 2013-03-02

Description of Seven New Species of American Birds from Various Localities, with a Note on Zonotrichia melanotis

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 359-430

Created: 2013-03-02, modified: 2013-03-02

Notes on the Species of Agonoderus, Bradycellus and Stenolophus Inhabiting America North of Mexico

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 373-382

Created: 2013-03-02, modified: 2013-03-02

Correspondence of the Academy for 1868

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 394-396

Created: 2013-03-02, modified: 2013-03-02

Donations to the Library, 1868

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1868, in volume 20, pages 400-419

Created: 2013-03-02, modified: 2013-03-02