A common and beautiful species recognizable at sight, after the peridia break, by the aggregate capillitium constantly in evidence above the abandoned vasiform peridia. The figures of Bulliard are unsatisfactory, although the description he gives and the name he suggests, still current, may lead us to concede that he had our species before him. The spores are larger than in _T. persimilis_, and the episporic net different, the "border" wider. The plasmodium in the latitude of Iowa not uncommon in woods in June, after emerging passes into fruit in the laboratory in about forty-eight hours, and the rupture of the peridia follows presently. The hypothallus is quite distinct, extra-marginal, and in substance like to the peridial wall. Not rare. Throughout the northern forests, Maine to Washington and Oregon, south to Alabama, Louisiana, Mexico. 8. TRICHIA VERRUCOSA _Berk._ 1860. _Trichia verrucosa, Fl. Tasm._, II., p. 269. Sporangia pyriform, or obovoid, shining, ochraceous from the color of the contents, stipitate, more or less botryoid or connate; stipe twice the height of the spore-case, reddish brown, simple or consolidated with others, weak, inclined, or procumbent; hypothallus distinct; spore-mass ochraceous yellow, the elaters simple, with smooth tapering points, with spirals three or four, the spores beautifully and strongly reticulate, after the manner of the spores in the species preceding, with the meshes generally complete and always large, quite variable in size 12-16 mu. Rostafinski quotes the species (_teste_ Lister) from Chile. Specimens in the herbarium of the State University of Iowa are from Jalapa, Mexico, collected by Mr. C. L. Smith. The species may be therefore expected in the southern United States. Berkeley described it from Tasmania. _T. superba_ Mass, from description would seen to be the same thing. 9. TRICHIA PULCHELLA _Rex._ 1893. _Trichia pulchella_ Rex, _Proc. Phil. Acad._, p. 366. Sporangia solitary or in groups of four or five, bright vitelline yellow, sessile; the peridium thin, transparent, opening irregularly above; hypothallus none; capillitium bright yellow, not emergent, the threads narrow, 3-4 mu, wound with spirals three or four, more or less irregular, smooth, longitudinal ridges wanting, the apices rather long, acuminate, about twice the diameter of the elater, or anon clavate or even globose, bulbose at the tip and furnished with several stout spines; spore-mass concolorous; under the lens spores colorless, marked by a very feebly developed reticulation of _T. persimilis_ type, but the bands narrow and, as shown by the narrow "border," low, meshes few and often imperfect, globose or sub-globose, about 12 mu.