The above species was described by me in the Proceedings of the U. S. National Museum, Vol. XIV., page 253, in my revision of the genus Mamestra. Recently Mr. Grote has questioned the distinctness of this species from olivacea. I could hardly credit this as being serious, and barely referred to the matter in the September, 1896, number, of the Canadian Entomologist, page 240. In the December number, page 301, Mr. Grote returns to this subject, and again suggests that circumcincta may be either olivacea or comis. He refers to the fact that the description resembles that of both the species cited by him, and brings in Mr. Beutenmüller to testify to the fact that my species closely resembles olivacea. Mr. Beutenmüller is not a specialist in the Noctuidæ, and not entitled to an opinion that would carry decisive weight. Furthermore, it was not fair to Mr. Beutenmüller to ask him to make the comparison without first referring him to my description. Mr. Grote speaks as if the statement that circumcincta, or its description rather — for he has never seen the species — resembles olivacea was an important one and a discovery of his own.