282 
Birge—Notes on Cladocera. 
Lillj. Daphnia minnehaha , Herrick, and Fleuroxus trigonellus f 
O. F. M., were also found at Tomahawk, Wis. There have, 
therefore, been collected from central and northern Wisconsin 
a total of sixty-nine species and varieties, which in most Euro¬ 
pean lists rank as species. 
The following species in the list are new to science: 
Geriodaphnia lacustris , sp. nov. 
Daphnia Kahlbergiensis Schdl. var. breviceps , var. nov. 
Bunops scutifrons , gen. et sp. nov. 
Anchistropus minor ,. sp. nov. 
Chydorus faviformis , sp. nov. 
The following species are new to the United States: 
Simocephalus exspinosus , Koch. 
Geriodaphnia quadrangula , Sars. 
Streblocerus serricaudcttus, Fisch. 
Acantholeberis curvirostris , O. F. M. 
Alona falcata , Sars. 
Alonella rostrata , Koch. 
Fleur oxus hastatus , Sars. 
Acroperus angustatus , Sars. 
The following species are new to Wisconsin: 
Daphnia pulex , var. pulicaria, Forbes. 
Monospilus tenuirostris , Fisch. 
Pleuroxus nanus, Baird. 
Ghydorus rugulosus , Forbes. 
The following species and varieties have not as yet been 
found in southern Wisconsin, although no doubt many of them 
will be discovered there: 
Daphnia Kahlbergiensis , var. breviceps , Birge. 
Acantholeberis curvirostris , O. F. M. 
Alona falcata, Sars. 
Alonella rostrata , Sars. 
Monospilus tenuirostris , Fisch. 
Pleuroxus nanus , Baird. 
Pleuroxus hastatus , Sars. 
Ghydorus rugulosus , Forbes. 
Ghydorus faviformis , Birge. 
