Sir,—I am in receipt of a communication from A. Radcliffe Grote, M. A., Hildesheim, Germany, anent the determination of Hydrœcia stramentosa for Canadian collectors. He points out to me that the fact of its being under Apamea in our list indicates the source from whence the name was obtained, as he was the only author that ever used that generic term for the group to which stramentosa belongs, proving that he knew of its being taken in Canada, having received specimens from collectors there to name; which is more than likely, as Mr. Grote was at that time the recognized authority on North American Noctuidœ.