Note 2321 — BOOK IX. THE NATURAL HISTORY OF FISHES.

Cuvier says, that this was probably the Petromyzon branchialis of Linnæus, the lampillon, a little fish resembling a worm, which adheres to the gills of other fish, and sucks the blood. The same name was also given to the Clupea alosa of Linnæus, our “shad;” indeed Linnæus gave this name to the whole herring and pilchard genus, erroneously classing them with the shad.