Such is the original description of this distinctly American species. _H. varneyi_ Rex should differ in having spirals seven or eight, and spore only 6.25 mu. Mr. Lister, who has compared types of both species, declares them the same! The present writer has been unable to secure authentic specimens. Pennsylvania. 7. HEMITRICHIA INTORTA _List._ 1891. _Hemiarcyria intorta_ Lister, _Jour. Bot._, p. 268. 1891. _Hemiarcyria longifila_ Rex, _Proc. Phil. Acad._, p. 396. 1894. _Hemitrichia_ intorta List., _Mycetozoa_, p. 176. Sporangia gregarious, globose-turbinate or pyriform, golden-yellow, stipitate; peridium thin, translucent, shining, opening at the summit irregularly, leaving a funnel-shaped receptacle below; stipe dark red brown, solid, rugulose; capillitium of threads sparingly branched, but looped and doubled upon themselves and constantly intertwisted, orange-yellow, 3-4 mu in diameter, with spirals four, sparingly spinulose, even and regular, the longitudinal striae conspicuous; spores in mass concolorous, under the lens yellow, delicately warted, globose, 9-10 mu. Concerning this species, Dr. Rex says: "Externally this species resembles _H. clavata_ Pers., and has probably often been mistaken for it. The capillitium, however, in its structural details and habit of growth, is widely different. The partial untwisting of the loops of the capillitium by drying, after the rupture of the sporangium, causes it to be projected and elongated sometimes two or three times the length of the sporangium." Outwardly the open sporangium, by the projecting free tips, reminds one of a trichia. The capillitium is like that of _H. vesparium_, but less rough, and, of course, different in color. Rare. Fairmount Park, Philadelphia; Ohio, Iowa. 8. HEMITRICHIA CLAVATA (_Pers._) _Rost._ PLATE III., Figs. 1, 1 _b_. 1794. _Trichia clavata_ Pers., _Roem. N. Bot. Mag._, I., p. 90. 1873. _Hemitrichia clavata_ Pers., Rost., _Versuch_, p. 14. 1875. _Hemiarcyria clavata_ (Pers.) Rost., _Mon._, p. 264. 1893. _Hemiarcyria ablata_ Morg., _Jour. Cin. Soc._, p. 30. 1893. _Hemiarcyria funalis_ Morg., _Jour. Cin. Soc._, p. 32. Sporangia clavate or turbinate, gregarious, scattered or crowded, yellow, olivaceous or brownish, stipitate; the peridium generally thin, evanescent above, breaking away so as to leave a more or less definite cup beneath; stipe about one-half the total height, reddish, reddish-brown, or blackish, hollow about half-way down; capillitium various, yellow or ochraceous, made up of slender threads more or less freely branched and netted, bearing four or five regular, even, spiral plates which project sharply and are generally smooth, the free extremities numerous or almost none, swollen, or simply obtuse; spore-mass concolorous, spores by transmitted light pale yellow, globose, minutely but distinctly warted, 8-9 mu.