Sporangia scattered, stipitate or occasionally sub-sessile spherical, .8-1 mm. high; peridium granulated, bright golden yellow; stipe, when present, one-half to two-thirds the height of the sporangium, blackish-brown; hypothallus, minute, thin, brown; columella absent; capillitium rather dense, composed of large angular nodes, completely filled with bright yellow granules of lime, and connected by very short, delicate, colorless internodes destitute of lime; spores globose minutely verruculose, or asperate, 10.7-11.8 mu in diameter, brownish-violet by transmitted light, black in the mass. This is the original description, 1893, of _P. sulphureum_ (Alb. & Schw.) Sturgis; the author last named having compared certain stalked New England forms with what he could find of _P. sulphureum_ in the herbarium of Schweinitz at Philadelphia, and having, as he thought, established identity. Meantime Mr. Lister had been inclined to refer _P. auriscalpium_ Cke. to _P. rubiginosum_ Fr., _Mycetozoa_, p. 61. In 1898 Professor Sturgis and Mr. Lister agreed that the New England specimens, owing to color and character of stipe and some other differences could not be the Schweinitzian species, but did indeed conform much better with those in London labelled _P. auriscalpium_ Cke. Accordingly _P. sulphureum_ is something else, very different, (v. A. & S., Cons. _Fung. Tab._, VI., f. 1), and by aid of recent[28] discoveries in Sweden goes its own way again. Meanwhile _P. sulphureum_ Sturgis stands, a new type for _P. auriscalpium_ Cke., the description modified to suit; the lamented pioneer-author receives honor due, and his handsome species, with its "golden graving," may now march, let us hope, under appropriate banner far down the fair highway to future fame! 48. PHYSARUM OBLATUM _Macbr._ PLATE III., Fig. 6; PLATE XIV., Figs. 3, 3 _a_, 3 _b_. 1879. _Physarum ornatum_ Peck, Rep. _N. Y. Museum_, XXXI., p. 40 (?). 1893. _Physarum oblatum_ Macbr., _Bull. Lab. Nat. Hist. Iowa_, II., p. 384. 1896. _Craterium maydis_ Morg., _Myx. Miam. Vall._, p. 87. 1909. _Physarum maydis_ Torr., _Flor. des Myxo._, p. 193. 1911. _Physarum maydis_ Torr. List., _Mycet., 2nd ed._, p. 59. Sporangia gregarious, stipitate, small, bright yellow, globose or depressed-globose, rough; stipe reddish-brown or fuliginous, even, short, slender; hypothallus scant, black, or none; columella none; threads of the capillitium yellow, delicate, connecting the rather dense and abundant yellow lime-granules; spore-mass brownish-black, spores violaceous, minutely but distinctly spinulose, 9-11 mu.