lor,
filled with minute granules, and arranged in one or more strata; from
these vesicles originate the tubules, which traverse the wall for a
certain distance, and then enter the interior among the spores; the
tubules are more or less compressed, simple or branched, and the surface
is ornamented with warts and ridges, which sometimes form irregular
rings and reticulations.

If the sporophores in this genus be regarded as simple sporangia, which
is the view that Rostafinski takes of one of the species, the tubules
are simply the peculiar threads of a capillitium. If, however, the
aethalium is a compound plasmodiocarp, the tubules stand for the original
plasmodial strands and, consequently, represent the component sporangia.

1. LYCOGALA CONICUM, Pers. AEthalia small, ovoid-conic, gregarious,
sometimes close together with the bases confluent, the surface pale
umber or olivaceous marked with short brown lines, regularly dehiscent
at the apex. The wall thin; the outer layer not continuous, the
irregular brown vesicles disposed in angular patches and elongated
bands, which have a somewhat reticulate arrangement. The tubules appear
as a thin stratum upon the inner membrane; they do not branch, and they
send long slender simple extremities inward among the spores. Spores in
mass pale ochraceous, globose, minutely warted, 5-6 mic. in diameter.
See Plate III, Fig. 5.

Growing on old wood. AEthalium 2-5 mm. in height, the tubules 3-8 mic. in
thickness. This is _Dermodium conicum_ of Rostafinski's monograph, but
the structure is essentially the same as in the other species. Massee
evidently did not have specimens of this species. I have never seen any
branching of the tubules either in the wall or in the free extremities
of the interior.

2. LYCOGALA EXIGUUM, Morg. n. sp. AEthalia small, globose, gregarious,
the surface dark brown or blackish, minutely scaly, irregularly
dehiscent. The wall thin; the vesicles with a dark polygonal outline,
disposed in thin irregular reticulate patches, which are more or less
confluent. The tubules appear as an interwoven fibrous stratum upon the
inner membrane; they send long slender branched extremities inward among
the spores. Spores in mass pale ochraceous, globose, nearly smooth, 5-6
mic. in diameter. See Plate III, Fig. 6.

Growing on old wood. AEthalium 2-5 mm. in diameter, the threads 2-10 mic.
in thickness, with very slight thickenings of the membrane. The
polygonal vesicles give a