_Melanosporae_ (spores black, dark-brown or purplish-brown), combining the attributes of both the Coprinarii and the Pratelli of Fries. GENERA. Chitonia Fries. Agaricus Linn. Pilosace Fries. Stropharia Fries. Hypholoma Fries. Psilocybe Fries. Deconica Worth. Smith. Psathyra Fries. Bolbitius Fries. Coprinus Pers. Panaeolus Fries. Annellaria Karsh. Psathyrella Fries. Gomphidius Fries. Anthracophyllum Ces. Montagnites Fries. II.--POLYPORACEAE (Polyporei). GENERA. Boletus Dill. Strobilomyces Berkeley. Boletinus Kalchbr. Gyrodon Opatowski. Fistulina Bull. Polyporus Mich. Fomes Fries. Polystictus Fries. Poria Pers. Trametes Fries. Hexagonia Fries. Daedalea Pers. Myriadoporus Peck. Ceriomyces Corda. Bresadolia Speg. Cyclomyces Kunz. Favolus Fries. Gloeoporus Mont. Laschia Fries. Merulius Hall. Theleporus Fries. Porothelium Fries. Solenia Hoffm. III.--HYDNACEAE (Hydnei). GENERA. Hydnum Linn. Caldesiella Lace. Hericium Pers. Tremellodon Pers. Sistotrema Pers. Irpex Fries. Radulum Fries. Plebia Fries. Lopharia K. & M. Ow. Grandinia Fries. Grammothele B. & C. Odontia Pers. Kneiffia Fries. Mucronella Fries. IV.--THELEPHORACEAE (Thelephorei). GENERA. Craterellus Fries. Hypolyssus Pers. Thelephora Ehrh. Cladoderris Pers. Beccariella Ces. Stereum Pers. Hymenochaete Lev. Skepperia Berk. Corticium Fries. Peniophora Cooke. Coniophora D. C. Michenera B. & C. Matula Mass. Hypochnus Fries. Exobasidium Weron. Helicobasidium Pat. Cyphella Fries. Friesula Speg. Cora Fries. Rhipidonema Matt. V.--CLAVARIACEAE (Clavariei). GENERA. Sparassis Fries. Acartis Fries. Clavaria Vaill. Calocera Fries. Lachnocladium Lev. Pterula Fries. Ptifula Pers. Pistallaria Fries. Physalacria Peck. VI.--TREMELLACEAE (Tremellini) GENERA. Auricularia Bull. Hirneola Fries. Platygloea Schroet. Exidia Fries. Ulocolla Bref. Craterocolla Bref. Femsjonia Fries. Tremella Dill. Naematelia Fries. Gyrocephalus Pers. Delortia Pat. & Gail. Arrhytidia Berk. Ceracea Cragin. Guepinia Fries. Dacryomitra Pul. Collyria Fries. GENERA MINUS CERTA. Hormonyces Bon. Ditiola Fries. Apyrenium Fries. BREFIELD'S CLASSIFICATION OF FUNGI. A system of classification of fungi which is receiving attention from mycologists is that recently presented by the distinguished German author Dr. Oscar Brefield. Dr. Brefield's exhaustive investigations into the life-history of fungi in general have been such as to entitle his views to consideration, although the system presents some inconsistencies which may prevent its adoption in its entirety.