62 
University of Michigan 
RAVE 
Elliptio and Actinonaias. Young and depauperate specimens. 
Figures 1 and 2. A. walkert. Young specimens. 
Figure 3. E. plexus distinctus; juvenile. 
Figures 4 and 5. &. plexus; depauperate race. 
Figures 6 and 7. &. liebmanmi cuatotolapamensis; young. 
