IOWA ACADEMY OF SCIENCES. 
155 
The distribution of the species is given in the following 
table: 
ASSINIBOIN RIVER. 
Daphnia pulex De Geer. 
Ceriodaphnia censors (?) Birge. 
Iliocryptus sp ? 
Chydorus sphsericus O. F. Muller. 
Graptoleberis testudinaria var. inermis; Birge. 
RAT CREEK AT M’DONNELE ON PORTAGE PLAINS. 
Daphnia pulex De Geer. 
Ceriodaphnia censors (?) Birge. 
Simocephalus vetulus O. F. Muller. 
Simocephalus serrulatus Koch. 
Scapholeberis angulata Herrick, 
Scapholeberis mucronata O. P. Muller. 
Eurycercus lamellatus O. P. Muller. 
Alona costata Sars. 
Graptoleberis testudinaria var. inermis, Birge. 
Pleuroxus procurvus Birge. 
Pleuroxus excisus Fischer. 
Pleuroxus sp ? 
Chydorus sphaericus O. P. Muller. 
Acroperus leucocephalus Koch, 
Polyphemus pediculus Linn. 
PRAIRIE SLOUGH NEAR PORTAGE LA PRAIRIE. 
Daphnia pulex var. pulicaria, Forbes. 
Ceriodaphnia consors (?) Birge. 
Simocephalus vetulus O. F. Muller. 
Simocephlus serrulatus Koch. 
Scapholeberis mucronata O. F. Muller. 
Lathonura rectirostris O. P. Muller, 
Macrothrix laticornis Jurine. 
Bunops scutifrons Birge. 
Eurycercus lamellatus O. P. Muller. 
Graptoleberis testudinaria var. inermis, Birge. 
Dunhevedia setiger Birge. 
Pleuroxus denticulatus Birge. 
Pleuroxus procurvus Birge. 
Pleuroxus sp ? 
Chydorus globosus Baird. 
Chydorus sphaericus O. F. Muller. 
Alonopsis latissima var. medir, Birge. 
Acroperus leucocephalus Koch. 
Polyphemus pediculus Koch. 
DEEP WEEDY SLOUGH AT PORTAGE LA PRAIRIE. 
Sida crystallina P. E. Muller. 
Daphnia pulex DeGeer. 
