519 
PISTAKEE LAKE, AUGUST—OcTopER, 1916. Borrom FAauNA 
29 CoLtLecTions, LirroraAL ZONE, 1 To 7 FT. SOME VEGETATION 
Number per square yard| Pounds per acre 
Goniobasis sp. 18.0 18.0 10.82 10.82 
Pisidium sp. 
Amnicolidae 
Valvatidae 
Physa spp. 
Planorbis spp. 
Unionidae, young 
co 
“3 i 
mE Spo pote 
a rn) 
Po 
Sphaerium sp. 9 
7 
9 
5 366.2 
4 
6 
2 
Oligochaeta (small spp.) 
Planarians 
Small leeches 
Chironomid larvae (small spp.) 
Sand-case caddis 
HiRoH 
wt to & bo 
b 
w tom oto 
383.3 42.6 
Hexagenia, ete. (nymphs) 
Agrionid nymphs 
Sialis larvae 
Asellus sp. 
Hyalella knickerbockeri 
bo 
ey 
WN AO AoNws 
CHrmnro 
RON WROD 
onwhds 
= 
so 
a 
Total 767.5 
