Acanthocephala from the Illinois River, with Descriptions of Species and a Synopsis of the Family Neoechinorhynchidae

Abstract

The present paper is based upon an intensive search for Acanthocephala in the vertebrates of the Illinois River, especially in the region of Havana, Illinois. The collections were the result chiefly of work during the summer of 1910, though a number of subsequent observations have been included in the tabulated results along with a few instances of hosts examined at other points on the river, namely at Peoria and at Beardstown, Illinois.