MOXOGRAPII OF THE LABOULBEKIACEr.. 357 
This Species occurs vritli the next on tlic logs of its liost, lofs frcfjnonfly on Uie tluirax or 
abdomen. It diiSFcrs from T. mirificus in the form of its peritliccia, which arc siih-conical, as 
well as hj its symmetrical receptacle. The short stalk-cell and large hasal cells of iia pcri- 
tliccia serve also to distinguish it. 
Teiiatomyces huevicaulis Tiiaxt<3r. Tlato X, figs. 1-3. 
Proc. Am. Acad. Arts aud Sci. Vul. XXIX, p. 99. 
Pcrithccia one to five, purplish brown, long, slender, 6frai<rht or slightly curved, cylindrical 
or slightly inflated near the middle, tapering abruptly to the ahnost tninmte nprx, much longer 
than the stalk and basal cells together, the latter concolorous with tho pcrithecium, the ptnlk-cell 
nearly hyaline. Receptacle nearly symmetrical, blnrk and quite opa(]UC, except the partly 
translucent basal cell; above the opa(pio portion expanding abruptly to form the broad distal 
portion, from tbo numerous small cells of which arise, around the edge, the circle of crowded 
appendages which surround the pcrithccia. Larger appcndag(!S faintly tinged with brownish 
purple, consisting of a rather short stout basal cell bearing below, cxl<>rnally, several anthcridia 
and short sim])le pointed brancblets, above one to several large branrhrs, wliich in turn branch 
near tlicir distal ends one to three times successively in the bunu; plane, the basal cells of the 
branches and primary brancblets usually distally inflated, the nltimate brancblets obli(picly 
septate and blunt, or more often ending in a sharply pointed cell. Spores, 33 x 4 /x. Ferithccia, 
110-120 X 23 II. Stalk-cells, 50 x 15 /z. Receptacle, 85 x 50 /*. Longest appendages, 100 /i. 
On Actohius nanus Horn, Kittery Point, Maine, and vicinity of Cambridge, Mass. 
This species is much rarer than the preceding, which is sometimes associated with it on tbo 
abdomen of its host. It is subject to considerable variation in size and in the length of its 
appendages, but is always readily distinguished by the form of its short-stnlkcd poritliecia and 
the pecidiar more or less clavatc form of the larger cells of its appendages. The host occurs 
with Ac^lophorus pronus, l)ut is less common. 
DirLOMYCES Thaxtcr. Plate X, fvis. 18-21. 
Proc Am. Acad. Art« and Sci. Vol. XXX, p. 468. 
Flattened antero-posteriorly, sub-triangular, bilaterally symmetrical, furcate through the 
presence of a pair of prominent posterior projections. The receptacle consisting of two super- 
posed cells, followed by four cells placed antero-posteriorly in pairs, of which the posterior 
produce the characteristic prominences; the anterior a pair of short stalked pcrithccia, near the 
base of which, within and above, arise two or more pairs of appendages, and eventually a second 
pair of perithceia. Appendages copiously branched, many of the brancblets terminated by beak- 
like cells. Spores once-septate. 
A singular genus, recalling Teratomyces, to which it seems most nearly allied through the 
presence of the characteristic terminal beak-like colls of it« api)endngr's. The branching of 
the latter is not, however, syrapodial in a single plane, as is the case in Teratomyces, and the 
o-nr^r^rnl <jtrnrfnro, of the rcccutacle is difficult to homoloffize with that of any other genus. The 
