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Table. 1. Total average infection of the yellow perch in the lakes along the 
Yahara Biver during July, August, September, 1917. 
Parasite 
Mendota, 
Deep 
Mendota, 
Shallow 
Monona 
Wingra 
Waubesa 
Kegonsa 
Number examined... 
30 
44 
30 
26 
36 
26 
Diplostotnum cuticota . 
6.0 
53.2 
66.0 
0.2 
8.5 
27.5 
Bunodera luciopercae . 
0.3 
7.2 
Clinostomum . 
0.1 
0.1 
Echinorhynckus thecaius . 
0.8 
0.3 
0.3 
0.1 
Neoechinorhynchus cylindratus . 
0.1 
0.1 
Acanthocephalan cysts . 
3.9 
5.0 
8.5 
1.2 
2.4 
Dacnitoides cotylophora . 
3.8 
2.1 
0.1 
0.6 
1.0 
3.6 
Idhyonma cysts . 
16.1 
8.6 
0.3 
1.5 
2.8 
0.7 
Proteocephalus, intestinal. .... 
0.6 
2.5 
1.3 
2.6 
0.4 
Proteocephalus, cysts . 
32.4 
26.1 
14.1 
24.5 
1.4 
1.0 
Bothriocephalus cuspidatus . 
0.1 
0.9 
0.1 
4.4 
Glochidia .. 
0.3 
11.8 
0.6 
Piseicolaria . 
0.1 
0.2 
0.1 
Unknown cysts . 
3.2 
3.2 
1.8 
0.7 
2.5 
1.1 
Total. 
66.7 
120.9 
84.8 
38.8 
24.9 
40.9 
Tota 1 without Diplostomum. 
60.7 
67.7 
18.8 
38.6 
16.4 
13.4 
