**** _Olivaceous-umber._ =H. limaci´nus= Fr.—_limax_, a slug. =Pileus= 1½-2½ in. broad, _disk umber then sooty_, paler round the margin, fleshy, convex then flattened, obtuse, smooth, viscid. =Flesh= rather firm, white. =Stem= 2–3 in. long, ½ in. thick, _solid_, firm, ventricose, _sticky_, flocculose, fibrilloso-striate, _roughened with squamules at the apex_. =Gills= adnate, then decurrent, somewhat distant, thin, _white inclining to ash-color_. _Fries._ Veil entirely viscous, not floccose. In woods among damp leaves. _Stevenson._ =Spores= 12×4µ _Cooke_. New York, _Peck_, Rep. 34. Thin woods and open places. Reported edible Bulletin No. 5, 1897, Boston Mycological Club. =H. hypoth´ejus= Fr. _Gr._—under; _Gr_—sulphur (under gluten). =Pileus= 1–2 in. broad, _at first smeared with olivaceous gluten_, ash-colored, when the gluten disappears, becoming pale and yellowish, orange or rarely (when rotting) rufescent, fleshy, _thin_, convex then depressed, _obtuse_, even, somewhat streaked. =Flesh= thin, white then becoming light yellow. =Stem= 2–4 in. long, 2–3 lines and more thick, _stuffed_, equal, _even, viscous_, but rarely spotted with the veil, at length hollow. Partial _veil_ floccose, at the first _cortinate and annular, soon fugacious_. =Gills= decurrent, _distant_, distinct, at first pallid (even whitish) soon _yellow_, sometimes flesh-color. _Fries._ Very protean, changeable in color and variable in size. Stem not scabrous. There is no trace of the veil when the plant is full grown. Appearing after the first cold autumn nights, and lasting even till snow. In pine woods. Frequent. _Stevenson._ =Spores= 10×6µ _Cooke_; 12×4µ _W.G.S._ Hollis Webster, in Bulletin No. 5, 1897, Boston Mycological Club, writes: “H. hypothejus Fr., when dried, is crisp and nutty, and very good to carry in the pocket for occasional nibble.” II.—CAMAROPHYL´LUS. * _Gills deeply decurrent, etc._ =H. praten´sis= Fr.—_pratum_, a meadow. (Plate XXXVII, figs. 1, 2, 3, p. 146. Plate XXXVIII, p. 147.) =Pileus= 1–2 in. and more broad, somewhat pale yellowish, _compactly fleshy especially at the disk, thin toward the margin_, convex then flattened, _almost top-shaped_ from the stem being thickened upward, even, smooth, moist (but not viscous) in rainy weather, when dry often rimosely incised, here and there split regularly round. =Flesh= firm, white. =Stem= 1½-2 in. long, ½ in. and more thick, _stuffed_, internally spongy, externally polished-evened and firmer, _attenuated downward_, even, smooth, naked. =Gills= _remarkably decurrent_, at _first arcuate, then extended in the form of an inverted cone_, very distant, thick, firm, brittle, connected by veins at the base, very broad in the middle, of the same color as the pileus. _Fries._