366 THE CHICAGO ACADEMY OF SCIENO-ES. 



8. A REVISION OF THE PHYS^E OF NORTHEASTERN ILLINOIS. 



BY FRANK C. BAKER. 



The Nautilus, Vol. XIV, No. 2, p. 16, 1900. 



The following species are described and figured: Physa 

 heterostropha, P. sayii, P. integra, P. gyrina, and variety elliptica. 



g. A REVISION OF THE LIMN^EAS OF NORTHERN ILLINOIS. 



BY FRANK C. BAKER. 



Trans. Acad. Sci. St. Louis, Vol. XI, No. 1, pp. 1-24, pi. i, 1901. 

 All of the species found in the Chicago area are described 

 and figured. 



10. NEW VARIETIES OF FRESH-WATER SHELLS. 



BY FRANK C. BAKER. 

 The Nautilus, Vol. XV, p. 17, 1901. 

 Description of Limn&d reflexajolietensis. 



11. DESCRIPTION OF A NEW SPECIES OF LIMN^EA. 



BY FRANK C. BAKER. 



Bull. Chi. Acad. Sciences, Vol. II, No. 4, p. 229, 1901. 

 Description of Limncea Woodmffi. 



12. LlMN^EA AURICULARIA IN AMERICA. 



BY FRANK C. BAKER. 

 The Nautilus, Vol. XV, No. 5, p. 59, 1901. 



XII. BIBLIOGRAPHY OF WORKS REFERRED TO IN 

 THIS PUBLICATION.* 



In the following list the abbreviations used for the author are given, 

 and following this a list of the abbreviations used for the several publica- 

 tions. 



ADAMS, CHARLES B. (C. B. Ad.) Catalogue of the Mollusca of Middle- 

 bury, Vt., and Vicinity; with Observations. (From Amer. Journ. Sci., I 

 series, Vol. XL, pp. 266-267, 1841.) 

 .... Descriptions of Shells. (1. c., Vol. XXXIX, I series, pp. 373-375, 1840.) 



Fresh Water and Land Shells of Vermont. (From Thompson's History 



of Vermont, Vol. I, 1842.) 



....Shells of Fresh Pond. (From Amer. Journ. Sci., I series, Vol. XXXVI, 

 p. 392, 1839.) 



CHITTY AND BLAND. Contributions to Conchology. Vol. I, New York, 



Oct., 1849; Nov., 1852. 



*The writer wishes to express his appreciation of Mr. W. G. Binney's raphy of 



North American Conchology, to which he has made frequent reference. The catalogue of 

 Corbiculidas of Temple Prime (Amer. Journ. Conch., Vol. V, pt. 2, 1869-70) has also been of 

 great service. The writer would also express his obligations to Mr. Charles W. Johnson, 

 Curator of the Wagner Free Institute of Science, Philadelphia, Pa., and to Mr. George W. 

 Clapp, Pittsburg, Pa., for very valuable assistance in making up this bibliography. 



