i8 University of Micliigan 



Montana : 



Cooper, J. G. The Shells of Montana. Am. Nat., II, pp. 486-487. 

 1868. 



Sqi'VER, Homer. Li.st of Shells from the A'icinity of Alingusville, 

 Montana. Nautilus. VIII. pp. 63-65. 1894. 



Elrod, AI. J. Limnological Investigations at Flathead Lake, Mon- 

 tana, and \'icinity. Trans. Amer. Micr. Soc, XXII, p. 63. 1899. 



Elrod, M. J. A Biological Reconnaissance in the Vicinity of Flat- 

 head Lake. Bull. Univ. Mont., Biol. Ser.. No. 3. 1902. 



Elrod, M. J. Collecting Shells in Montana, Nautilus, XV, pp. 

 103-104; 110-112. 1902. 



Elrod, M. J. Montana Shells. Bull. Univ. Alont., Biol. Ser., \, pp. 

 255-262. 1903. 



Berry, S. S. A List of the ]\Iollusca from the Musselshell Valley. 

 Nautilus, XXVI, pp. 130-131. 1912. 



Berry, S. S. Notes on the Mollusca of Central Alontana. Naut- 

 ilus, XXIX, pp. 124-128. 1915. 



