=penicillatus=, Fr. P. 3-4 cm. convex, umb. rusty-brown, densely floccose with innate scales; g. dusky brown; s. 4-7 cm. slender, equal, with adpressed rusty-brown scales; sp. 8-9 x 5. IV. DERMOCYBE. _Flesh of pileus thin, everywhere equal, at first downy or subinnately silky, but glabrous when adult, dry, not hygr._ * _Gills at first whitish or pallid._ =ochroleucus=, Fr. P. 4-7 cm. gibbous then obtuse, even, pallid white; g. crowded becoming ochre-tan; s. 4-7 cm. solid, firm, ventricose, white; sp. 8 x 4-5. =decumbens=, Fr. P. 3-4 cm. exp. even, white then yellowish, shining; g. tan from first; s. 3-4 cm. hollow, clavato-bulbous, ascending, pallid; sp. ----. =riculatus=, Fr. P. 5-7 cm. exp. gibbous, yellowish, with adpressed silky bloom, becoming whitish, disc naked; g. adnate; s. 5-7 cm. hollow, pallid, base thickened. =tabularis=, Fr. P. 6-9 cm. soon plane, flocculose then almost glabrous, brownish tan then pale; g. emarginate; s. 5-7 cm. white, adpressedly fibrilloso-scaly then almost glabrous; sp. ----. [=ochrophyllus=, Fr. P. exp. dry, glabrous, brownish olive then pale; g. ochre then tan; s. solid, pallid, variegated with darker adpressed scales. =camarus=, Fr. Fragile. P. 5-7 cm. gibbous, hoary brown then pale; g. subadnate; s. 5-7 cm. partly hollow, equal, curved, inside and outside white, apex silvery shining; sp. 8-9 x 6-7. =diabolicus=, Fr. P. 2-3 cm. hemispher. obtuse then gibbous, fuscescent with a grey bloom, then glabrous and tawny yellow; g. subemarginately adnexed; s. 6-7 cm. glabrous, pallid, apex grey; sp. 10-12 x 7. ** _Gills at first violet then purplish._ =caninus=, Fr. P. 5-9 cm. exp. nearly glabrous, rufous-brick-red, tawny when dry; g. broad, purple then cinnamon; s. 5-7 cm. clavately bulbous, subperonate, pallid, apex violet; sp. 8 x 5-6. =myrtillinus=, Fr. P. 5-7 cm. gibbous then flattened, sooty, hoary with white fibrils; g. rather distant, amethyst-blue then bluish tan; s. 4-5 cm. bulbous silky, not zoned, whitish; sp. 10 x 5. Apex of stem violet; no purple in g. =azureus=, Fr. P. 3-5 cm. silky or atomate shining, hoary lilac; g. clear blue-violet; s. 4-7 cm. glabrous, slightly striate, base thickened, downy, whitish; sp. 9 x 6. =albocyaneus=, Fr. P. 3-5 cm. exp. hoary silky then glabrous, white then yellowish; g. broad, crowded, bluish purple then subochre; s. 6-9 cm. subclavate, naked, whitish; sp. 6-10 x 4-7. Differs from _C. anomalus_ in clavate s. and flattened p. =anomalus=, Fr. P. 2.5-5 cm. obtuse then gibbous, sooty-rufous, hoary fibrillose then glabrous and tawny; g. crowded, bluish-purple then cinnamon; s. 5-7 cm. thin, attenuated, fibrillose, somewhat scaly, violet then pallid; sp. 8-9 x 7. =spilomeus=, Fr. P. 2-3 cm. exp. gibbous, dry, fuscous then tan; g. crowded, narrow; s. 4-5 cm. whitish lilac variegated with tawny rufous scales; sp. ----. Differs from _C. anomalus_ in scaly stem.