366 THE CHICAGO ACADEMY OF SCIENCES. 
8. A REVISION OF THE PHyS# 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. sayu, P. integra, P. gyrina, and variety elliptica, 
9. A REVISION OF THE LIMN2%AS OF NORTHERN ILLINOIS. 
BY FRANK C. BAKER. 
Trans. Acad. Sci. St. Louis, Vol. XI, No. 1, pp. 1-24, pl. 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 Limnea reflexa jolietensis. 
II. DESCRIPTION OF A NEw SPECIES OF LIMN/A. 
BY FRANK C. BAKER. 
Bull. Chi. Acad. Sciences, Vol. II, No. 4, p. 229, 1901. 
Description of Limnea Woodruffi. 
12. Limn#A 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.*2-* 
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. (l.c., Vol. XX XIX, I series, pp. 575-375, 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, 1889.) 
...., CHITTY AND BLAND. Contributions to Conchology. Vol. 1, 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 
Corbiculide 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. 
