NOTES ON CLADOCERA. III.* 
By E. A. Bikge, Professor of Zoology, University of Wisconsin. 
A. On a Collection of Cladocera from Central and Northern 
Wisconsin and Northern Michigan. 
In the summer of 1892, I made a short collecting trip through 
central and northern Wisconsin, occupying the last days of 
July and the first of August. Earlier in the same season I 
visited Green lake and made collections supplementing the 
pelagic material kindly given me by Prof. C. Dwight Marsh, of 
Ripon College, Wis. In August, 1893, I collected Cladocera in 
Washington Harbor, Isle Royale, Michigan, and in Gogebic 
lake, Mich. During the same season Mr. L. S. Cheney, of the 
University of Wisconsin, collected for me in northern Wiscon¬ 
sin, but his material, except that from lake Yieux Desert, has 
not yet been thoroughly studied. 
My thanks are due to Hon. Philo Dunning, the former 
president of the Wisconsin Pish Commission, and to Gen. E. 
E. Bryant, its present head, for securing me free transporta¬ 
tion on these excursions; and to the officials of the Chicago, 
Milwaukee & St. Paul Railroad, and of the Milwaukee, Lake 
Shore & Western Railroad for transportation furnished. 
The central Wisconsin collections were made from lakes 
Winnebago, Butte des Morts and Green, and also from ponds 
and marshes at Necedah and New 7 Lisbon. Pelagic material has 
also been given me by Prof. Marsh from lakes Puckaway, Buf¬ 
falo and Rush, but this, so far as examined, has shown little of 
interest. 
In northern Wisconsin I visited Rhinelander, collecting in 
* The preceding articles of this series were published in the Transac¬ 
tions of this Academy, vol. IV, 1878, and vol. VIII, 1891. 
