MONOGRAPH OF THE LABOULBENIACE^. 273 
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CANTHAR03IYCES PUSILLU3 Tliaxtcr. Platc VTT, figs. 11-14. 
Proc. Am. Acad. Arts ami Sci. Vol. XXIX, p. 100. 
Peritheciiim becoming reddish brown, inflated just above the base, the distal portion conical, 
tapering to a blunt symmetrical apex, borne on a rather short narrow stalk-cell bent towards 
the appendage and separated from the pcrithccium by three small sub-triangular basal cells. 
Receptacle consisting of a very small basal and a much larger rounded sub-basal cell, more or 
less suffused with brown, which gives ri.se to the stalk-cell of the perithecium nnd the appendage. 
Antheridial appendage consisting of a large squari^^h basal cell followed by the anthcridium 
proper, which is primarily a large squarisli cell, its outer half, or more, becoming divided by 
anastomosing septa into numerous small cells, the inner portion also showing a division into two 
or three larger cells ; tlie whole bearing terminally a series of usually three superposed flattened 
cells, strongly constricted at the septa, and giving rise distally to from one to three simple cylin- 
drical, nearly hyaline, sparingly septate branches, usually exceeding the perithecium in length. 
Spores, 18x2fi. Perithccia, 22-26 x 30-55 /*. Total length to tip of perithecia, 80-85 fi, to tip 
of appendages, 90-120 fx. 
On TrogopUoeus sp. York, Maine; Wavcrly, ]\ras8. 
Tliis species is perhaps the smallest of the known forms of Lal)0ulbeniacea5, and is some- 
what difficult to discover and remove from the legs or elytra of its host, where, however, it is 
not rarely found. Owing to its minute size, the detailed structure of the anthcridium was not 
plainly made out, neither was any discharge of antherozoids noticed. Its structure corresponds 
so closely, however, to that characteristic of the genus as emended, that there can be little doubt 
of the correctness of its generic reference. It occurs more commonly on the legs or near the 
tips of the elytra of its host, a small blackish staphylinid common on wet logs along the margins 
of brooks or in wet rubbish caught in similar situations. 
EUCANTIIAROMYCES, Thaxter. Plate Y, figs. 25-27. 
Receptacle consisting of two superposed cells, giving rise on one side to a free stalked peri- 
theciumj on the other to a free appendage. The appendage consisting of a basal and sub-basal 
cell terminated bj a compound antheridium. The anthcridium formed from numerous small 
cells, oliliquely superposed in three rows, bordered externally by a sterile cell, and terminated by 
a cavity from which the antherozoids arc discharged through a short, irregular, finger-like 
projection. 
This genus is based upon the peculiar structure of its antheridium, which appears to be dis- 
tinctly different from the honey-comb-like body which occurs in ITaplomyces and Cantharomyces, 
as well as from the more simple form illustrated by Camptomyces, which is, probably, its 
nearest ally. The material examined consists of but two type specimens, in one of which the 
antheridium was in perfect condition, the terminal cavity being filled with antherozoids. It is 
impossible to determine in this specimen whether all or only a few of the small cells Avhich 
compose the antheridium are antheridial cells; but, from analogy with Dimorphomyccs and Pey- 
ritschiclla, it seems probable that the majority of them are ; and that the cells represented in 
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