LVIII 
Distribution 
of 
Schilbeodes 
gyrinus » 
dees 
Gi 
WE y ‘3 
cowl. and Miss. Canal 
ae Drainage Canal 
. County Seat 
y 5 v ~~ } Pe » ! : } 
Z S, & <a \{ d 
5 _ mY y 95 
\ y , \ 2 
OT} ni 
. | f i 
Saw Ill. and Mich. Canal - yA 
a f SY Si ? “U x 
. Ge “af 
VI 2 
