2. DIACHÆA SPLENDENS, Peck. Sporangia globose, sometimes a little depressed, with the base umbilicate; the wall steel-blue with tints of purple and violet, quite persistent, rupturing irregularly. Stipe short, thick, white, arising from a white, reticulate hypothallus, tapering upward; the columella oblong or short cylindric, extending beyond the center of the sporangium. Capillitium of slender, brown threads, which branch several times and form a loose network of rather large meshes. Spores subglobose, with very large warts, dark violet, 8-10 mic. in diameter. Growing on old leaves and twigs. Sporangium .4-.6 mm. in diameter, the stipe about the same length. This is a beautiful species. 3. DIACHÆA THOMASII, Rex. Sporangia globose, or sometimes a little depressed; the wall gold-bronze, with tints of purple and blue, subpersistent, rupturing irregularly. Stipe thick, dull ochre-yellow in color, variable in length, usually very short and sometimes quite obsolete, arising from an ochre-yellow hypothallus; the columella varying from bluntly-conical to cylindric-clavate, attaining the center of the sporangium. Capillitium of slender, brown threads, radiating from all points of the columella, branching several times and forming a loose network of elongated meshes. Spores globose, minutely warted, violaceous, 11-12 mic. in diameter. See Plate XI, Fig. 36. Growing on sticks, leaves, etc. Sporangium .5-.7 mm. in diameter, the stipe usually shorter or sometimes wanting. This species has been found only in the mountains of North Carolina. I am indebted to Dr. George A. Rex for my example. In its structure the species is essentially a Lamproderma, but the stipe and columella are stuffed with granules of lime. EXPLANATION OF PLATE XI. Fig. 25.--Sectional view of the capillitium and stipe of Clastoderma De Baryanum, Blytt. Fig. 26.--Section through the capillitium, columella and stipe of Lamproderma arcyrionema, Rost. Fig. 27.--Perpendicular section through Lamproderma violaceum, Fr. Fig. 28.--Perpendicular section through Lamproderma scintillans, Berk. Fig. 29.--Section through the capillitium, columella and stipe of Comatricha Ellisii, Morgan. Fig. 30.--Sectional view through the capillitium and columella of a portion of Comatricha crypta, Schw. Fig. 31.--Sectional view through the columella and capillitium of a portion of Comatricha longa, Peck. Fig. 32.--A portion of the capillitium of Stemonitis tenerrima, B. & C.--A sectional view through the columella above and below a view of the superficial network. Fig. 33.--A portion of the capillitium of Stemonitis splendens, Rost.--A sectional view through the columella above and below a view of the superficial network. Fig. 34.--The capillitium of a very short sporangium of Stemonitis Webberi, Rex; the breadth, however, somewhat exaggerated. Fig. 35.--Showing the stipe, columella, apical disk and pendent capillitium of Enerthenema papillatum, Pers.