504 
-2. DEEP, SAND-BeacH Tyre (Quiver, MATANzAS) 
Quiver Lake, Sept. 30 To Ocroner 12, 1914. Borrom.Fauna 
15 CoLuections, DrerTH, 7 To 12 FT. 
No VEGETATION 
Number per square yard 
Pounds per acre 
Campeloma subsolidum 
58.2 174.6 
Lioplax subcarinatus 48.0 57.6 
Vivipara contectoides 462.0 745.5 2,310.0 
Vivipara subpurpurea trace 
Pleurocera sp. 177.3 212.4 
Amnicola emarginata 1.3 
Musculium jayanum 3.3 ib 
Pisidium sp. 1.0 6.2 trace 
Young Unionidae 0.6 1.2 
Chironomid larvae. (small spp.) 24.0 a3 
Small leeches 52.6 8.9 
Large leeches 16.0 32.0 
Small Oligochaeta 54.0 161.1 1.8 
Caddis larvae 2.6 0.2 
Agrionid nymph 0.6 0.3 
Asellus sp. 11.3 1.0 
Total 912.8 2,805.0 
2,754.6 
2.9 
47.5 
