oloration; the color is about that of the habitat, the
weathered surface of dead herbaceous stems and roots. On dead corn
stalks not infrequent. Differs from other species of the genus in having
smoother capillitium, for which reason Rostafinski calls the present
species _Perichaena vermicularis_. _O. pallida_ Berk. & C. seems to us
to be the same thing, _N. A. F._, 726.

New England, New Jersey, South Carolina, Ontario, Ohio, Iowa.

2. OPHIOTHECA CHRYSOSPERMA _Currey_.

1854. _Ophiotheca chrysosperma_ Currey, _Quart. Mic. Jour._, II.,
p. 240.
1875. _Cornuvia circumscissa_ (Wallr.) Rost., _Mon._, p. 290.
1911. _Perichaena chrysosperma_ Lister, _Mycetozoa, 2nd ed._, in
part, p. 248.

Plasmodiocarp elongate, bent and curved in various ways, spherical, more
rarely annular or even reticulate, yellowish or ochraceous brown,
opening irregularly; peridium thin, with yellowish outer layer;
capillitium rather abundant, of threads slender, sparingly branched and
minutely but distinctly spinulose; spore-mass yellow, spores by
transmitted light pale, almost smooth, about 8 mu.

Occurs on the inner bark of deciduous trees, especially of oak. Not
common.

This is possibly _Cornuvia circumscissa_ (_Wallr._) of Rostafinski's
monograph; but it is doubtful to what Wallroth referred. Rostafinski's
other citations are equally uncertain. Currey's figures and description
alone merit recognition.

Ohio, Iowa, Tennessee; Canada.

3. OPHIOTHECA WRIGHTII _Berk._

PLATE II., Figs. 7, 7 _a_, 7 _b_.

1868. _Ophiotheca wrightii_ Berk. & C., _Jour. Linn. Soc._, X.,
p. 349.
1876. _Cornuvia wrightii_ (Berk. & C.) Rost., _Mon. App._, p. 36.
1892. _Cornuvia wrightii_ (Berk. & C.) Macbr., _Bull. Lab. Nat.
Hist. Ia._, II., p. 122.
1911. _Perichaena chrysosperma_ Lister, _Mycetozoa, 2nd ed._,
p. 248.

Plasmodiocarp bent or short-flexuous, often arcuate or completely
annular, dark chestnut brown or black, opening irregularly; peridium
thin, brittle, translucent, covered without by a rather dense layer of
brownish or black brown scales; capillitium of long, sparingly branched
threads furnished with projecting spinules remarkable for their length,
about twice the diameter of the thread; spores yellow, minutely but
distinctly warted, about 12 mu.

This is the common species everywhere on the inner side of the bark of
fallen trees, _Ulmus_, etc. It is readily distinguish