MOXOGRAni OF THE LABOULBENIACE-S. 281 
cal papillEC. Recoptacle stout, sub-triangular in form, consisting of a rnthcr small, often 
slender, basal cell, followed by the usual three transverse series (>f cells. Tlie lower of these 
consists of the median or primary cell, on one side of which a single small cell is cut off, while 
on the opposite side a scries of four or more cells, mostly nppendiculate, extend obliquely upwaid 
and outward, overlapping one another to some extent The middle series consists of a large 
median cell, on either side of which nuniorons (four or more) nppondiculute cells extend obli(piely 
upward and outward, and produce, on one Bide, the large poinlid :in<l»eridium, whicli does not 
usually project beyond the margin of the receptacle. The distal series, like the snb-di>s<ul, 
composed of fewer cells and bearing the single perithecium. Appendages oval or short cylin- 
drical, bccommg brownish; their basal septa large, but not conspicuously blackened. Pporo^i, 
37-10x4/*. Perithccia, 100x33/t. Appendages (longest), 33 /i. Total length to tip of 
pcrithccium, ] 90-220 fx. Receptacle, 90-110 X 50-58 fx. 
On Platynus cincticolUs Say. Vicinity of New Haven, Conn. ; Weston, Mass. ; York, JSiIainc, 
A rare species occurring near the extremity of the anterior legs of its host, where, owing 
to its compact form ami small size, it is easily overlooked. It is very distinct from the two pre- 
ceding species, and peculiar from its sub-triatigular form, from the presence of cells cut off on 
both sides of the primary or median cell of the lower transverse series, and from the numerous 
short, inflated, bladder-like appendages. The latter are thickly clustered on the loft margin of the 
receptacle, while the right presents an unbroken line from the foot nearly to its summit The 
P 
found on a single individual. 
Peyeitschiella nigrescens Thaxtcr. Plate VI, figs. 22, 23. 
Proc. Am. Acad. Arts and Sci. Vol. XXVUI, p. 184. 
Receptacle sub-triangular in form, consisting of a single basal nearly hyaline cell followed 
by the usual tlirec scries, the lower broadly edged with black on either side, consisting of a long 
median cell from which three cells arc cut off on the right and two on the left; the middle 
series of about ten cells, which form slight blunt appcndiculate projections on cither side, 
extending much higher on the left than at the rinht, where the single antheridium is situated; 
the upper series shorter than the mi<ldle, bearing the single stout, asymmetrical perithecium, on 
cither side of wdiich are several short appendages asymmetrically placed. Perithccia, 05 x 10 /x. 
Receptacle, 70 x 37 (i. Total length, 130 /i. 
On Philonthus debilis Grav. VTaverlj, Mass. 
The single type from which the above description is drawn was found on one of the jiostcrior 
le^s of its host, the figures given representing an anterior and posterior view of the same speci- 
men. The compact sub-triangular form of the receptacle and the stout perithccium connect it 
F 
of its lower cell series suggests some of the species of Dichomyces. In its asymmetrical 
development and single antheridium, however, it corresponds exactly to the type structure of 
Peyritschiella. The perithccium of the unique type is not quite mature, and more fully 
developed material may show that its apex becomes characteristically papillate as in the other 
species. 
