CONTENTS. 



ARTICLE I. Mo^^oGR^PH of tue Bats of Nokth America. Lj H. 

 Allen, M. D., Assistant Surgeon U. S. A. June, 

 1864. Pp. 110, and 68 wood-cuts. (16^) 



ARTICLE IL Laxd a>-p Fresh Water Shells of North America. 

 P^KT IL Pplmonata Limnophila and Thalasso- 

 PHiLA. By W. G. Bixney. September, 1865. Pp. 

 172, and 261 wood-cuts. C^"^'^) 



ARTICLE III. Land and Fresh-Water Shells of North America. 



Part III. AMPULLARIIDiE, VALVATIDiE, ViVIPARIDiE, 



Fresh-Water Rissoid.e, Cyclophorid^, Trunc^a 

 * TELLiD.E, Fresh-Water NERiTiDiE, Helicinid.^ 



W. G. BiNNEY. September, 1865 

 232 wood-cuts. 



By 



Pp. 128 and 



(144) 



ARTICLE IV. Researches upon the Hydrobun^ and allied Forms: 



CHIEFLY MADE FROM MATERIALS IN THE MuSEUM OF THE 



Smithsonian Institution. By Dr. Wm. Stimpson. 

 August, 1865. Pp. 64, and 29 cuts. (-01) 



ARTICLE V. Monograph of American Corbiculad^ (recent and 



fossil). Prepared for the Smithsonian Institution. 



Bv Temple Prime. December, 1865. Pp. 92 an,l 



•, X (145) 



86 wood-cuts. 



ARTICLE VI. CHECK List of the Invertebrate Fossils of North 

 America. Eocene and Oligocexe. By i. A. oo>- 

 RAD. May, 1866. Pp.46. C-0( ) 



ARTICLE VIL Check List of the Invertebrate Fossils of North 

 AMERICA. Miocene. By F. B. Meek. Novembei 

 1864. Pp.34. ^1^^> 



