Note 7 — A NEW TYPE OF THE NAYAD-GENUS FUSCONAIA. GROUP OF F. BARNESIANA LEA.
Reading edition
In Nautilus, 28, 1914, p. 31, I have described the anatomy of “Pleurobema fassinans.” This is a mistake: the shells examined belong to Pleurobema all right, but are the form known as U. argenteus Lea, which belongs to the oviforme-group, and should be called: Pleurobema oviforme argenteum (Lea). These will be treated more fully elsewhere.