1950] 
Humes and J amnback — Parasitic Water- mite 
81 
locality 
number 
Anodonta 
cataracta 
Elliptic) 
complanatus 
Lampsilis 
radiata 
locality 
number 
Anodonta 
cataracta 
Elliptio 
complanatus 
Lampsilis 
radiata 
1 
16(1) 
3 
23 
75(27) 
7 
1 
2 
4 
16(1) 
24 
64(6) 
1 
3 
2(2) 
4 
25 
6(6) 
16 
4 
1(1) 
26 
10(2) 
4 
4 
5 
8 
113(12) 
27 
18(2) 
23(1) 
6 
29(9) 
28 
9 
63(36) 
7 
54(7) 
29 
25(12) 
8 
15(2) 
30 
142(124) 
9 
25(1) 
208(43) 
20 
31 
23(21) 
22(2) 
10 
2 
16(1) 
3 
32 
4(1) 
12(3) 
11 
8(5) 
32 
33 
2(1) 
6 
12 
77(8) 
19 
34 
2 
5(2) 
13 
4(4) 
35 
13 
12(1) 
14 
2 
80(3) 
1 
36 
12(3) 
11 
15 
2(2) 
18 
37 
3(1) 
9 
16 
185(7) 
1 
38 
11(1) 
11 
17 
26(2) 
5 
2 
39 
22 
10(1) 
18 
2(2) 
40 
17 
17(1) 
12 
19 
1(1) 
41 
34(2) 
1 
20 
19 
57(19) 
8 
42 
11 
22 
18(16) 
21 
11(8) 
193(49) 
43 
4(4) 
12 
2 
22 
46(6) 
1 
Table I. The total number of clams examined and number with N. 
ingens for each of the three host species in the 43 positive localities. 
