170 



Ruschenberger.] -*■ • ^ [April 1, 



Freshwater Rhizopods of North America. By Joseph Leidy, M.D., Professor of Anatomy 

 in the University of Pennsylvania, and of Natural History in Swarthmore College, 

 Pennsylvania. Government Printing Office, Washington, 1879. Quarto, pp. 324+18 

 =372. Illustrated hy six figures intercalated in the text, and 48 plates which contain 

 1180 figures of 31 genera and 84 species, of which Dr. Leidy originally described 52 

 species. All the figures were first drawn and colored Vjy Dr. Leidy, to be copied by 

 artists. 



JOt'ENAL OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 



Second Series. Quarto. 



1. Histon,- and Anatomy of the Hemipterous Genus Belostoma. 2. Miscellanea Zoolog- 

 ica. Vol. 1, pp. 5,-67 and 67-70, 1 plate, 1847. 



Descriptions of two species of Distoma, with the partial history of one of them. 

 Vol. 1, pp. 301-309, 1 plate, 1850. 



Descriptions of Some American Annelida abranchia. Vol. 2, pp. 43-50, 1 plate, 1850. 



Description of a New Species of Crocodile from the Miocene of Virginia. Vol. 2, pp. 

 135-8, 1 plate, printed Dec. 1851. 



On the Osteology of the Head of Hippopotamus, and a Description of the Osteological 

 (Characters of a New Genus of HippopotamidfE. Vol. 2, pp. 207-24, 1 plate, 1853. 



On Bathygnathus borealis, an Extinct Saurian of the New Red Sandstone of Prince Ed- 

 ward's Island. Vol. 2, pp. 327-30, 1 plate, 1854. 



Contributions towards a Knowledge of the Marine Invertebrate Fauna of the Coasts of 

 Rhode Island and New Jersey. Vol. 3, pp. 135-152, 2 plates, 1855. 



Descriptions of Some Remains of Fishes from the Carboniferous and Devonian Forma- 

 tions of the United States. Vol. 3, pp. 159-65, 1 plate, 1856. 



Descriptions of Some Extinct Mammalia. Vol. 3, pp. 166-71, 2 plates, 1856. 



The Extinct Mammalian Fauna of Dakota and Nebraska. Including an Account of 

 Some Allied Forms from Other Localities, together with a Synopsis of the Mamma- 

 lian Remains of North America. Illustrated with 30 plates. Preceded with an In- 

 troduction on the Geology of the Tertiary Formations of Dakota and Nebraska, 

 accompanied with a Map. By F. V. Hayden, M.D., Professor of Mineralogy and 

 Geology in the Univ. of Pa., U. S. Geologist, etc., etc. Vol. 7, pp. 472, 1869. 



Note. — The authors of the above-named work were enabled to execute it chiefly 

 through the generosity of Messrs. Joseph Jeanes and William P. Wilstach, to whom, as 

 well as to some others, they acknowledge indebtedness. 



Description of Vertebrate Remains chiefly from the Phosphate Beds of South Carolina. 



Vol. 8, pp. 209-61, 5 plates, 1871-81. 

 Parasites of the Termites. Vol. 8, pp. 425-17, 2 plates, 1874-81. 

 Remarks on Bathygnathus borealis. Vol. 8, pp. 449-51. 

 Uruatella gracilis, a Fresh-water Polyzoau. Vol. 9, pp. 5-16, 1 plate, 1884. 



Smithsonian Contributions to Knoavledge. 

 Quarto. 



A Flora and Fauna within Living Animals. (Accepted for publication 1851.) Vol. 5, pp. 



68, 10 plates, 1853. 

 Memoir on the Extinct Species of Fossil Ox. (Accepted for publication 1852.) Vol. 5, 



pp. 20, 5 plates, 1853. 

 The Ancient Fauna of Nebraska ; or a Description of Extinct Mammalia and Chelonia 



from the Mauvaises terrcs of Nebraska. (Accepted for publication 1852.) Vol. 6, 



pp. 126, 25 plates, 1851. 

 A Memoir on the Extuict Sloth Tribe of North America. (Accepted for publication Dec, 



1853 ; published June, 18-55. ) Vol. 7, 1855, pp. 70, 16 plates, 

 retaceous Reptiles of the United States. (Accepted for publication Dec, 1864.) Vol. 14, 



1865, pp. 140, 20 plates. 



