THE NAUTILUS. 17 
Lampsilis parvus (Barnes). Little Muddy, Beaucoup and 
Locust creeks. 
Anodonta imbecilis Say. Creeks and ponds. 
Anodonta grandis ovata Lea. Creeks and ponds, plentiful. 
Anodonta grandis salmonia Lea. Beaucoup creek. 
Uniomerus tetralasmus (Say). Little Muddy and Beaucoup 
creeks. 
Sphaerium sulcatum (Prime). Little Muddy and Puncheon 
creeks, ; 
Sphaerium striatinum (Lam.). Little Muddy and Locust 
creeks. 
Sphaerium stamineum (Conrad). Little Muddy and Locust 
creeks. 
Sphaerium solidulum (Prime). Little Muddy and Beaucoup 
creeks. 
Sphaerium occidentale (Prime). Little Muddy creek. 
Musculium transversum (Say). Little Muddy, Beaucoup 
and Locust creeks. 
Musculium contractum (Prime). Little Muddy creek. 
Musculium truncatum (Linsley). Little Muddy creek. 
Musculium elevatum (Hald.). Little Muddy and Beaucoup 
creeks and pond on the Hinkley farm. Closed to Musculiwm 
hodgsonii. 
Pisidium compressum Prime. Little Muddy creek, Sheller 
lake and pond north of the R. R. bridge, 
Pisidium fallax Sterki. Little Muddy creek. 
Pisidium fraudulentum Sterki. R. R. reservoir. 
Pisidium illinoisensis Sterki. Reservoir and pond on the 
Hinkley farm. 
Pisidium politum decorum Sterki. Pond north of the R. R. 
bridge. 
Pisidium punctatum Sterki. Little Muddy and Puncheon 
creeks. 
Pisidium punctatum inerme Sterki. Beaucoup creek. 
Pisidium sargenti Sterki. Puncheon creek. 
