270 
IOWA ACADEMY OF SCIENCES 
. Alona guttata 
Alona testudinaria var. inermls 
Pleuroxus denticulatus 
Chydorus sphsericus 
South Park Pond : 8 visits. 
Daphnia pulex 
Simocephalus vetulus 
Bosmina longirostris 
Macrothrix laticornis 
Pleuroxus denticulatus 
Chydorus sphaericus 
Sixth Avenue Bridge Sloughs : 7 visits. 
Daphnia pulex 
Daphnia sp(?) (see notes) 
Simocephalus vetulus 
Scapholeberis mucronata 
Ceriodaphnia sp (?) (see notes) 
Pleuroxus procurvatus 
Pools at Belt Line Bridge : 4 visits. 
Daphnia pulex 
Simocephalus vetulus 
Flood Ponds at East Tenth and Vine Streets : 5 visits. 
Sida crystallina 
Daphnia pulex 
Simocephalus vetulus 
Moina paradoxa 
Bosmina longirostris 
Alona guttata 
Forty-second Street sloughs : 3 visits. 
Daphnia pulex 
Simocephalus vetulus 
Scapholeberis mucronata 
Scapholeberis angulata 
Ceriodaphnia sp (?) (see notes) 
Lathonura rectirostris 
Alonopsis latissimus 
Alona guttata 
Dunhevedia setiger 
Nourse’s Slough : 3 visits. 
Daphnia pulex 
Ceriodaphnia sp(?) (see notes) 
Fortieth and Kingman : 1 visit. 
Pleuroxus » denticulatus 
Camp Douglas Slough : 3 visits. 
Daphnia pulex 
Simocephalus vetulus 
Zoo Pool : 9 visits. 
This is a small pool cut off to the south of Zoo Lake very shady and 
muddy bottom. Few hundred square feet in area. Not described above. 
Findings 
Sida crystallina 
Daphnia pulex 
Simocephalus vetulus 
Moina paradoxa 
Bosmina longirostris 
Chydorus sphaericus 
Dunhevedia setiger. 
