478 
Wisconsin Academy of Sciences, Arts, and Letters. 
Table 7. — Showing Distribution by Depth and Character of Bottom —(Continued.) 
Name 
Depth in Meters 
Character of Bottom: 
Optimum 
0-1 
1-2 
2-3 
3-5 
5-7 
7- 
Rock 
Gravel 
Sand 
1 
1 
Mud 
Plant 
Opt. 
dept. 
Opt. 
Hab. 
EPHEMERIDA~(Cont.) 
Heptagenia interpunc- 
cc 
a 
0-1 
R 
f 
f 
f 
r 
r 
c 
c 
1 
RP 
f 
a 
c 
1-3 
s 
“ “ old '* 
r 
a 
c 
r 
0-2 
GR 
/ 
/ 
f 
a 
5-10 
R 
Caenis diminuta. 
CC 
c 
a 
c 
a 
r 
ccc 
1,5-9 
P 
ODONATA 
Argia putrida. 
f 
f 
/ 
0-2 
RG 
f 
f 
f 
r 
d 
1-3 
P 
Gomphus fraternus. 
r 
r 
r 
1 
SG 
Enallagma antennatum. 
f 
if 
r 
a 
2-4 
P 
Epicordulia princeps.... 
r 
r 
r 
r 
j. 
f 
f 
2-7 
SG 
HEMTPTERA 
Notonecta glauca. 
f 
Corixa sp. 
a 
f 
Plea striola.. 
f 
NEUROPTERA 
Sisyra umbrata. 
f 
/ 
0-1 
R 
Sialis infumata. 
r 
a 
cc 
c 
6-25 
M 
LEPIDOPTERA 
Nymphula maculalis.... 
f 
f 
a 
1 
P 
Nymphula allionalis.... 
f 
f 
a 
1 
P 
TRICHOPTERA 
Leptocerus ancylus. 
St 
r 
a 
r 
0-1 
R 
Leptocerus dilutus ...... 
a 
r 
a 
r 
0-1 
R 
Polycentropus sp. 
c 
r 
c 
c 
0-2 
RG 
Ttbytrichia clavata. 
cc 
r 
Y 
cc 
c 
c 
0-1 
RG 
Oxyethira sp. 
r 
r 
1 
P 
Limnephilus sp. 
a 
f 
f 
f 
f 
r 
f 
f 
/ 
0-2 
P 
Platyphylax subfascia- 
tus... 
f 
r 
r 
f 
f 
0-2 
PS 
Agraylea multipunctata 
cc 
ccc 
cc 
c 
c 
f 
cc 
c 
f 
ccc 
0-4 
RP 
Hydroptila sp. 
ccc 
ccc 
cc 
c 
c 
f 
cc 
c 
c 
cc 
0-5 
RP 
Molanna uniophila. 
a 
c 
a 
a 
f 
r 
f 
a 
c 
1 
SG 
Leptocella uwarowii.... 
ccc 
ccc 
ccc 
ccc 
cc 
c 
c 
a 
a 
ccc 
0-7 
P 
Helicopsyche borealis... 
c 
c 
c 
a 
f 
r 
f 
r 
c 
0-5 
S 
Triaenodes flavescens. . 
r 
r 
r 
/ 
f 
r 
a 
2-6 
P 
Leptocerus sp... 
r 
r 
f 
c 
f 
c 
5-12 
M 
DIPTERA 
Corethra punctipennis.. 
r 
c 
ccc 
cc 
7-25 
M 
Palpomyia longipennis.. 
a 
f 
f 
r 
r 
r 
a 
r 
r 
c 
0-2 
PR 
Probezzia pallida_.... 
c 
a 
f 
f 
r 
r 
a 
r 
r 
c 
0-2 
PR 
Chironomus modestus... 
r 
r 
r 
r 
r 
0-2 
S 
Chironomus plumosus... 
a 
r 
r 
a 
a 
c. 
0-2 
s 
Cricotopus exilis. 
r 
Y 
0-1 
p 
Crlcotopus trifasciatus.. 
a 
a 
a 
f 
r 
a 
a 
f 
0-3 
s 
Chironomus tentans var 
a 
c 
a 
f 
f 
"f" 
'■f” 
c 
c 
r 
0-3 
s 
Chironomus digitatus... 
cc 
cc 
cc 
c 
a 
f 
c 
cc 
ccc 
■'f' 
c 
0-5 
s 
Chironomus lobiferus... 
cc 
cc 
cc 
cc 
c 
a 
c 
cc 
ccc 
a 
ccc 
0-12 
SP 
Probezzia glaber.. 
c 
cc 
cc 
c 
a 
f 
a 
a 
a 
cc 
0-5 
p 
Chironomus fulviventris 
/ 
f 
/ 
f 
f 
0-3 
s 
Chironomus flavus.. 
f 
f 
2 
s 
Tanypus fasciatus. 
c 
a 
f 
a 
2 
s 
Chironomus viridis. 
a 
c 
ccc 
cc 
a 
c 
ccc 
2-6 
p 
Tanypus monilis.. 
f 
a 
c 
cc 
c 
a 
c 
a 
cc 
3-6 
PS 
Chironomus abbreviatus 
f 
f 
3 
s 
Tanvtarsus exiguus..... 
a 
a 
5-7 
s 
Protenthes choreus. 
f 
f 
c 
cc 
a 
cc 
7-25 
M 
Chironomus tentans..... 
f 
f 
f 
a 
c 
cc 
f 
cc 
7-25 
M 
