Bibliography 



Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 3, p. 36, 1887. 

 Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 4, p. 48, 1887. 

 Brief notes on land & freshwater shells of Mercer Co., 111. \'ol. 



2, No. 5, p. 65, 1887. 

 Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 6, p. 80, 1887. 

 Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 7, p. 90, 1888. 

 Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 8, p. 103, 1888. 

 Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



2, No. 9, p. 110, 1888. 



Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



3, No. 2, p. 23, 1888. 



Brief notes on land & freshwater shells of Mercer Co., 111. Vol. 



3, No. 3, p. 34, 1888. 

 Description of two new species of Unio, from Arkansas. Vol. 5, 



No. 1, p. I, 1891. 

 Description of two new species of Unio from Florida. Vol. 5, No. 



3, p. 29, 1891. 

 New American Unio. Vol. 10, No. 8, p. 91, 1896. 

 New American Unionidae. Vol. 10, No. 9, p. 103, 1897. 

 Description of a new Unio from Missouri. Vol. 15, No. 7, 



p. 74, 1901. 

 Description of a new Unio from Tennessee. Vol. 15, No. 10, 



p. 115, 1902. 

 Description of a new Unio from Tennessee. Vol. 16, No. 1, 



p. 7, 1902. 

 Marshall, William B. 



Notes on the colonization of fresh- water snails. Vol. 5, No. 12, 



p. 133, 1892. 

 Littoral land-shells of New Jersey. Vol. 6, No. 2, p. 19, 1892. 

 Gould's types of Nassa and Columbella. Vol. 6, No. 4, p. 47, 



1892. 

 Helices colonized in Herkimer Co., New York. Vol. 6, No. 11, 



p. 126, 1893. 



57 



