This beautiful Pluteus is closely related to P. chrysophlebius B. and R., a southern species, which, according to the description, has the veins of the pileus darker colored than the rest of the surface and the stem enlarged above and hairy at the base, characters not shown by our plant. In our plant small young specimens sometimes have the stem solid, but when fully developed it is hollow, though the cavity is small. This character, with its small size, distinguishes it from P. leoninus. _Peck_, 38th Rep. N.Y. State Bot. Springton Hills, Chester county, Pa., Mt. Gretna, Pa. Frequent. June to frost. _McIlvaine._ Possesses the same rare edible qualities as P. cervinus, P. umbrosus. The caps, only, are tender. =P. chrysophæ´us= Schaeff. _Gr_—gold. =Pileus= 1–2½ in. across. =Flesh= very thin except at the disk, bell-shaped then expanded, glabrous, naked, slightly wrinkled, margin striate, cinnamon-color. =Gills= free, 2–3 lines broad, whitish then pale salmon-color. =Stem= 2–3 in. long, 2–3 lines thick, whitish, glabrous, equal, more or less hollow. On beech trunks, etc. Resembling P. leoninus in size, but differing in the cinnamon color of the pileus, which is often obtusely umbonate. _Massee._ =Spores= 5µ _W.P._ Haddonfield, N.J. June to October, beech roots and trunks. _McIlvaine._ Excellent. =ENTOLO´MA= Fr. _Gr_—within; _Gr_—a fringe. (Probably referring to the innate character of the pseudo veil.) =Pileus= rather fleshy, margin incurved, without a distinct veil. =Stem= fleshy or fibrous, soft, sometimes waxy, continuous with the flesh of the pileus. =Gills= _sinuate_, adnexed, often separating from the stem. =Spores= rosy, elliptical, smooth or subglobose and coarsely warted. Corresponding in structure with Tricholoma, Hebeloma and Hypholoma; separated from other rosy-spored genera by the sinuate gills. About twenty species of Entoloma are given in the states; of them seventeen are described by Professor Peck, as found in New York. I have not found a single species in sufficient quantity to test its edibility. Two of the European species, E. sinuata Fr. and E. livida Bull., are reputed to be very poisonous, producing headache, dizziness, vomiting, etc. Worthington Smith ate ¼ oz., which nearly proved fatal. Professor Peck reports a species, E. grande Pk., which he considers suspicious. Even the reported poisonous species have a pleasant odor corresponding to those of the esculent species. This makes them the more deceptive and dangerous. The pinkish or flesh-colored spores and gills distinguish Entoloma from Hebeloma, which has brown spores, and Tricholoma, which has white. Pluteus, which has pink spores and gills, is readily separated from it. Great caution should be observed. Entolomas should be thrown away or carefully tested. ANALYSIS OF TRIBES. GENUI´NI (genuine, typical species). Page 251.