‘ 
) CHAMPAIGN 
x 
Ux 
& 
& @ TUSCOLA 
K 
sei AC 
se y 
Nien’ 5° (2) ParcoLa 
= ; { 
sey) # ; 
<= 5} 0. 
Nef (See ee ae 
rw. ue: aa 
s a tle (<— 
ss = 2 Ser ao fe - 
ANS O i eH @MATTOON 
é a ) SD a 5 % ip J see ) 
- f aa pk = Beene net Y ) 
: 2 (ae Z eal i 
@ EZWARDSVILL Gece Drei ize ees 
ge Ke ae ee pal ee 
x ; 
- Bs @ HIGHLAND Z AE 
a: Sef IRS we =< x a) ) 
COLLINSVILLE \ Blom oats 3 # wa See aS 
% \ B cy een Si v6 
: i. ee 
@E. ST.LOUIS Ea ra / f° 
4 Se, eZTARLYLE 7 ee 
re eens Qe ae ee 
> a A 
Collecting stations are numbered 
Fig. 1.— Map of the drainage basin of the Kaskaskia River in Illinois. 
consecutively from the headwaters to the mouth. 
ett. 
COVER ILLUSTRATION: Adults of four species of darters. From watercolors by Mrs. Alice Ann Prick 
