This is a beautiful species, easily known by its discoidal or almost annulate sporangia mounted upon short dark black stipes. The stipe in western collections is sometimes very short, but generally suffices to raise the sporangium, a little at least, above the substratum. Sessile and plasmodiocarpous forms do occur with the typical stipitate phase, but may be regarded here as elsewhere as indicative of incomplete development. Plasmodium cream-colored, or pale yellow. Pennsylvania, Ohio, Iowa, Nebraska, South Dakota, Colorado. 9. BADHAMIA MAGNA _Peck._ PLATE XIV., Fig. 1. 1871. _Dictydium magnum_ Peck, _Rep. N. Y. State Mus._, XXIV., p. 84. 1879. _Badhamia magna_ Peck, _Rep. N. Y. State Mus._, XXXI., p. 56. 1894. _Badhamia macrocarpa Rost._, Lister, _Mycetozoa_, p. 34, in part. 1892. _Bahamia varia_ Mass. _Mon. Myxog._, p. 319, in part. 1894. _Badhamia magna_ Peck, List., _Mycetozoa_, p. 33. 1899. _Badhamia capsulifera_ (Berk.) Macbr., _N. A. S._, p. 68. 1911. _Badhamia magna_ Peck, Lister, _Mycetozoa, 2nd ed._, p. 34. Sporangia globose or ellipsoid, .7-1 mm., pale iridescent, stipitate; peridium thin with slight calcareous deposits, rugulose, opening irregularly, white; stipe long flaccid, straw-colored; capillitium an elegant uniform net, its threads stiffened by slight deposits of lime, the nodes little thickened, badhamioid; spores free, dusky with a shade of violet, minutely spinulose, about 10 mu. This beautiful species closely resembles some forms of _B. utricularis_ from which it differs chiefly in its unclustered smooth spores. _B. foliicola_ as recognized here is hardly more than a smaller, short-stemmed form of this; see species next following. Not rare in the eastern United States and Canada; Iowa. Seems to take the place of _B. capsulifera_ of Europe. 10. BADHAMIA FOLIICOLA _Lister_. 1897. _Badhamia foliicola_ List., _Jour. Bot._, XXXV., p. 209. 1911. _Badhamia foliicola_ List., _Mycetozoa, 2nd ed._, p. 34. "Plasmodium orange." Sporangia smaller, about .5-.6 mm., globose or ellipsoidal, iridescent-gray, stipitate or sessile, the peridium thin, rugulose, sparingly calcareous, when empty white; the stipe when present short but yellowish, of the flaccid sort; capillitium badhamioid; spores free, delicately spinulescent, dusky-violaceous, about 12-13 mu. This has been so far collected but once, on the shores of Lake Okoboji. It was developed, no doubt, on the natural debris of a bur-oak prairie border, and went to fruit on the leaves, stems, and fruiting spikes of a species of _Setaria_. It may prove to be different from the _B. foliicola_ of Europe; future collections and study must reveal that. Meantime it seems wise to refer it here. The color of the plasmodium is quoted from Miss Lister; a fact of some importance only when constant and confirmed by other criteria. Iowa; Toronto,--_Miss Currie._ 11. BADHAMIA UTRICULARIS (_Bull._) _Berk._