A detailed study is given of Marasmius menieri Boudier and M. caricis Karsten, both of which appear to belong to the genus Gloiocephala Massee. The new combination G. caricis is made. Marasmius menieri sensu Corner is shown to be an undescribed species of Gloiocephala. The merits of the genus Gloiocephala are discussed.