Descriptions of New Species of Rotifera and Protozoa from the Illinois River and Adjacent Waters

Abstract

In April, 1894, the Biological Experiment Station of the University of Illinois was established on the Illinois River at Havana, Illinois. Collections were made from various substations, located upon the river and adjacent lakes, at stated periods, the intervals varying from one week to one month. Nearly all of the towings made were examined by me, and the list of animals includes ninety species of Rotifera and eighty species of Protozoa.  Among the Rotifera there are three presumably hitherto undescribed species of the genus Brachionus. This genus is well represented by ten species and two varieties, and affords an interesting field for study. Seven species are described as new.