506 
QUIVER ‘LAKE, Aug. 30, 1915. Botrom Fauna 
14 CoLLEcTIONS, DEPTH, 1 To 6 FT. 
Most wWitH VEGETATION 
Number per square yard| Pounds per acre 
Vivipara contectoides Tail TA 35.5 35.5 
Amnicola limosa 16.0 
17.0 9.3 
Musculium transversum 1.0 
Small leeches 11.9 r : 
Chironomid larvae (large spp.) 162.8 109. 
-- 190.3 ; 113.9 
Chironomid larvae (small spp.) 13.5 ale 
Agrionid nymph 2.1 
Total 214.4 158.7 
Maranzas LAKE, Sept. 4, 1915. Borrom Fauna 
9 CoLLECTIONS,. DepTH, 6.5 To 8.5 rv. No VEGrTaTiIon 
Number per square yard} Pounds per acre 
Musculium transversum 63:o0ee 31. 
Pisidium sp. 206.6 284.3 8. 40.6 
Valvata spp. 14.4 0 
Small Oligochaeta 4.4 0. 
Small leeches 30.7 5. 
58.4 18.0 
Chironomid larvae (large spp.) 18.6 12. 
Palpomyia larvae 4.7 0. 
Total 342.7 58.6 
i 
