e if not in definite structure.

New England, New York, Pennsylvania, Ohio, Tennessee, Illinois,
Missouri, Iowa, Canada; Toronto,--_Miss Currie._

11. CRIBRARIA MICROCARPA (_Schrad._) _Persoon._

PLATE XVII., Fig. 4.

1797. _Dictydium microcarpum_ Schrad., _Nov. Gen. Pl._, p. 13.
1801. _Cribraria microcarpa_ Schrad., Pers., _Syn._, p. 190.
1875. _Cribraria microcarpa_ (Schrad.) Rost., _Mon._, p. 235.
1892. _Cribraria microcarpa_ Schrad., Massee, _Mon._, p. 63.
1893. _Cribraria microcarpa_ Schrad., Morg., _Myx. Mi. Vall._, p. 15.
1899. _Cribraria microcarpa_ Schrad., Macbr., _N. A. S._, p. 168.
1911. _Cribraria microcarpa_ Pers., Lister, _Mycetozoa, 2nd ed._,
p. 183 (?).

Sporangia loosely gregarious, very small, .2-.3 mm. in diameter, yellow
ochraceous, stipitate, nodding; stipe comparatively stout, dark brown or
blackish, tapering upward, often twisted at the apex as in _D.
cancellatum_; calyculus none, represented by simple ribs which give off
at intervals free or floating branchlets before blending into the common
net; net well developed, the meshes large, the nodes small, irregular,
though often rounded and prominent, black, connected by delicate
transparent threads, with free ends few or none; spore-mass yellow,
fading to ochraceous; spores pale, smooth, globose, 6-7 mu.

This species resembles at first sight the preceding, and has been often
mistaken for it. As a matter of fact, the distinctions are generally
very sharp. In the first place, the sporangia, when carefully measured,
are seen to be not more than half as great in diameter; the meshes of
the net, on the other hand, are much wider, the whole structure more
compact. The nodules are like those of _tenella_, but are much fewer.
The stipe is shorter, the cup wanting, and the costae are few and simple.
The color suggests _C. aurantiaca_. The habitat and distribution as _C.
tenella_.

To anyone who will read the account of the species as given by the
English _Mon., 2nd ed._, p. 183, it is immediately apparent that the
author has in mind a different form from that seen and described in our
territory and previously noted by the authors of Europe. These from
Schrader down, agree in portraying a brunescent form with yellow spores;
Mr. Lister enters it with the cyanic series and so describes and figures
it throughout. Schrader figures a nut-brown species; Rostafinski uses
that descriptive term in connection with the general appea