182 



'89a. Pupa Holzingeri. Nautilus, Vol. III., p. 96. 



'90. On New Forms of Vertigo. Proc. Acad. Nat. Sci. Phila., 

 1890, p. 31. 



'02. Some Notes on North American Forms of Vallonia. Nau- 

 tilus, Vol. V., p. 100. 



'93. Observations on Vallonia. Proc. Acad. Nat. Sci. Phila., 

 1898, p. 284. 



'95. Descriptions of New Pisidia. Nautilus, Vol. IX., p. 74. 



'98. Descriptions of New Pisidia. Nautilus, Vol. XL, p. 124. 



'98a. New Pisidia. Nautilus, Vol. XII., p. 77. 



'99. Pisidia New to our Country, and New Species. Nautilus, 

 Vol. XIII., p. 9. 



'99a. Pisidium handwerki, n. sp. Nautilus, Vol. XIII., p. 90. 



'no. New Pisidia and some General Notes. Nautilus, Vol. 

 XIV., p. 5. 



'01. New Pisidia. Nautilus, Vol. XV., p. 66. 



'02. Some Notes on the North American Calyculinse with New 

 Species. Nautilus, Vol. XVI., p. Si). 



'06. New Varieties of North American Pisidia. Nautilus, Vol. 

 XIX , pp. 80, 118. 

 Stimpson, William. 



'65. Researches upon the Hydrobiiiue and Allied Forms; 

 chiefly made upon the Materials in the Smithsonian Insti- 

 tution. Smith. Misc. Coll., No. 201, 1865. 



'70. On the Deep-water Fauna of Lake Michigan. Am. Nat., 

 Vol. IV., p. 403. 

 Strode, W. S. 



'94. Mollusks of Thompson's Lake, Illinois. Nautilus, Vol. 

 IV., p. 133. 



'91a. Mollusks of Spoon River, Illinois. Nautilus, Vol. V., p. 

 61. 



"91b. Destruction of Anodonta corpulenta Carpenter, at Thomp- 

 son's Lake, Illinois. Nautilus, Vol. V., p. 89. 



'92. The Unionidae of Spoon River, Fulton Co., Illinois. Am. 

 Nat., Vol. XXVI., p. 495. 



'95. A Day on the Spoon River in Illinois. Nautilus, Vol. IX., 



p. 19. 

 '95a. Helices in Illinois. Nautilus, Vol. IX., p. 28. 



