495 
LiverPpooL LAKE, Sept. 1, 1915. Borrom Fauna 
6 CoLLECTIONS, DEPTH, 6.5 To 9.5 rr. No VEGETATION 
Number per square yard} Pounds per acre 
Campeloma subsolidum 2.6 7.8 
5.9 24.3 
Vivipara contectoides 3.3 16.5 
Musculium transversum oe 19156 95.5 
Pisidium sp. 29.1 222.2 a Usa | 96.7 
Valvata spp. 1.6 0.1 
Leeches (small spp=) 20.6 3.4 
47.2 21,2 
Chironomid larvae (large spp.) 26.6 17.8 
Total 2 | 275.4 142.2 
LiverpooL. Laks, Sept. 1, 1915. Botrrom Fauna 
9 CoLLecTIONS, DrepTH 1.5 TO 6 FT. 
(Some vegetation at shallower stations) 
Number per square yard} Pounds per acre 
Vivipara contectoides | 23.4 23.4 117.0 117.0 
Musculium transversum 6.6 3.3 
Pisidium sp. 10.0 0.4 
Valvata spp. 2.2 26.5 0.1 4.2 
Amnicola limosa 5.5 0.3 
A. emarginata 2.2 C1 
Leeches (small spp.) 15.5 2.6 
Bout 28.2 
Chironomid larvae (large spp.) 38.2 25.6 
Total 103.6 149.4 
