Muttkowski—The Fauna of Lake Mendota. 
479 
Table 7. —Showing Distribution hy Depth and Character of Bottom 
Name 
Depth in Meters 
Chahacterof Bottom: 
Optimum 
0-1 
1-2 
2-3 
3-5 
5-7 
7- 
Rock 
Gravel 
Sand 
Mud 
Plant 
Opt. 
depth 
Opt. 
Hab. 
COLEOPTERA 
Dytiscus sp. larva. 
r 
r 
0-1 
G 
Hydroporus undulatus 
adult... 
r 
r 
0-1 
G 
Laccophilus maculatus 
adult... 
r 
r 
0-1 
G 
Peltodytes edentulus 
adult... 
r 
r 
0-1 
G 
“ larva... 
r 
r 
r 
0-2 
G 
Peltodytes duodecim- 
punctatus adult. 
r 
r 
0-1 
G 
Haliplus ruflcollis ad.... 
f 
f 
0-1 
G 
Affabussp. adult......... 
r 
r 
0-1 
R 
Psephenus lecontei ad .. 
r 
Parnid larva .. 
f 
f 
f 
r 
1 
R 
Haliplus ruflcollis larva 
r 
r 
/ 
r 
r 
r 
r 
f 
2-4 
P 
Dr.vops lithophilus ad... 
r 
r 
r 
r 
r 
r 
r 
0-2 
RG 
Elmis vittatus adult. 
r 
r 
r 
/ 
r 
r 
r 
r 
r 
3-6 
SG 
Psephenus lecontei 
larva... 
cc 
f 
r 
r 
r 
c 
a 
0-1 
R 
Stenelmis crenatus 
larva.... 
cc 
a 
f 
r 
r 
c 
cc 
r 
0-1 
G 
adult.... 
f 
/ 
/ 
f 
f 
r 
f 
f 
f 
f 
1-3 
SP 
