A Preliminary Account of two New Oligochaeta from Illinois

Abstract

Several species of Oligochseta were collected by the writer during- the past summer at the Biological Station upon the Illinois River, at Havana, founded early in the present year by the University of Illinois, with Prof. S. A. Forbes as Director.  Diplocardia riparia n. sp. and Sparganophilus eiseni n. sp. are described.