in
diameter. The bright bay mass of spores within will serve to distinguish
the species. The thin brown wall appears dark bay with the inclosed
spores.

3. LICEA BIFORIS, Morgan, n. sp. Sporangia regular, compressed, sessile
on a narrow base, gregarious; the wall thin, firm, smooth, yellow-brown
in color and nearly opaque, with minute scattered granules on the inner
surface, at maturity opening along the upper edge into two equal parts,
which remain persistent by the base. Spores yellow-brown in mass,
globose or oval, even, 9-12 mic. in diameter. See Plate III, Fig. 1.

Growing on the inside bark of Liriodendron. Sporangia .25-.40 mm. in
length, shaped exactly like a bivalve shell and opening in a similar
manner. I have also received specimens of this curious species from
Prof. J. Dearness, London, Canada.

4. LICEA PUSILLA, Schrad. Sporangia regular, sessile, hemispheric, the
base depressed, gregarious, chestnut-brown, shining; the wall thin,
smooth, dark-colored and nearly opaque, dehiscent at the apex into
regular segments. Spores in the mass blackish-brown, globose, even,
16-18 mic. in diameter.

Growing on old wood, Sporangium about 1 mm. in diameter. On account of
the color of the spores the genus _Protoderma_ was created for this
species by Rostafinski. It is number 2,316 of Schweinitz's N. A. Fungi.

II. TUBULINA, Pers. Sporangia cylindric, or by mutual pressure becoming
prismatic, distinct or more or less connate and aethalioid, the apex
convex, seated upon a common hypothallus; the wall a thin membrane,
minutely granulose, firm and quite persistent, gradually breaking away
from the apex downward. Spores abundant, globose, umber or olivaceous.

The sporangia usually stand erect in a single stratum, with their walls
separate or grown together: in the more compact aethalioid forms,
however, the sporangia, becoming elongated and flexuous, pass upward and
outward in various directions, branching and anastomosing freely. See
Plate III, Figs. 2, 3, 4.

1. TUBULINA CYLINDRICA, Bull. Sporangia cylindric, more or less
elongated, closely crowded, distinct or connate, pale umber to
rusty-brown in color, seated on a well developed hypothallus; the wall
thin, firm, with minute veins and granules, semi-opaque, pale umber,
often iridescent. Spores in mass pale umber to rusty-brown, globose,
most of the surface reticulate, 6-8 mic. in diameter.

Growing on old wood, mosses, etc. AEthalium circular or irregular in
s