Baker—The Fauna of The Lake Winnebago Region, 145 
Table 3. delation of Mollusca to the depth of the water. 
Winnebago 
Butte des 
Morts 
Oneida 
Mendota 
2 meters. 
472.84 
584.38 
429.29 
1,860.72 
1,153.21 
395.07 
81.76 
222.64 
2*6 meters. 
Total population. 
629.72 
1,144.77 
774.14 
157.76 
Table 4. Distribution of the Mollusca by families in the Winnebago region. 
Fox R. 
Butte des 
Morts 
Winnebago 
Swales, etc. 
Total 
Unionidae . 
20 
9 
11 
30 
Sphaeriidae . 
4 
19 
28 
1 
37 
Pleuroceridae . 
1 
1 
Amnicolidae . 
2 
7 
7 
8 
Valvatidae . 
6 
6 
6 
Viviparidae . 
2 
2 
2 
2 
Physidae . 
2 
2 
4 
6 
Planorbidae . 
2 
10 
10 
2 
12 
Lymnaeidae . 
2 
5 
4 
4 
10 
Ancylidae . 
1 
1 
Total. 
32 
61 
72 
11 
113 
Terrestrial species. 
19 
Total mollusks. 
132 
Table 5. Delation of the number of species of Mollusca to the depth of the 
water. 
2 Meters 
3 Meters 
4 Meters 
6 Meters 
6 Meters 
7 Meters 
Winnebago. 
63 
32 
29 
11 
13 
8 
Butte des Morts. 
51 
12 
3 
Oneida Lake, N. Y. 
66 
39 
29 
26 
11 
