I 
THAXTER. — MONOGRAPH OF THE LABOULKKN I \< K .!•;. ()7 
spinose anthcridium. Spores 45 X 4 /*. 
16-18 ft. Appendage above stalk-cell 35 
length to tip of perithechnn 275-325 a. 
l,Mi 
40 /<; the stalk-ceil 20 ,l Receptacle 'KM 10 X 30 /£. Total 
On the superior surface of the ahdomen of a small blackish fly, Kalum, New Pomerania; Berlin 
Museum, No. 1284. 
Although in its typical form (fig. 20) this species seems very unlike (he typical S. TUgOiW, more slender 
and elongate specimens occur which have made me hesitate to separate* them specifi< ally. The dinrnctci 
of the anthcridium, however, seem constantly different as indicated in the aeconipiinying figun ; ami 
while that of S. rvgosus possesses five superposed cells above the basal cell (fig. 27), bearing in nil twclvi 
antheridia, the present species has but two bearing six antheridia, and in one or two small specimcni 
there seem to be even less. The spinose cell is terminal and becomes an auihcridiuni. 
Stigmatomyces rugosus Thaxter. Plate XI A II, figs. 25-28. 
Proc. Am. Acad. Arts and SeL, Vol. XXXVI, p. 3«»S. March, L90L 
Venter of the perithecium dark amber-brown, roughened by about ten transverse maw or 1. irregu- 
lar and sometimes anastomosing darker ridges formed by irregular wart-like elevations; evenly o\;d or 
elliptical, and abruptly distinguished from the rather stout neck, which is usually bent outward and about 
equal to it in length or somewhat shorter, distally distinctly enlarged, especially posteriorly; the tip be- 
yond this enlargement abruptly somewhat narrower, distally asymmetrical, the two posterior lip-cells 
forming two corresponding projections, rounded or bluntly pointed and more prominent than the bilobed 
papilla formed below them by the anterior lip-cells the four subtending a slightly prominent apex. talk- 
cell of the appendage small, subtriangular, amber-brown, abruptly prominent below the relatively large 
dark brown basal cell, which, thougl 
and has a well-marked annular thickening on the inner side of its wall at the base; the fertile cells ahnv 
_ — a • * m m 
it, four or five in number, bearing the rather large antheridia in pairs; 
lateral or external, the free necks strongly curved outward. The cells of the receptacle nearly equal, 
or the upper larger; the basal cell tapering to the foot and distally slightly broader than the wbbasal .ell. 
Spores about 40 X 4 /*. Perithecium: venter 72 X 45 fi; neck 62-72 X 15 IS /<. Appendage proper 
i 
bear 
bceon 
60-70 fi, stalk-cell 18 /i. Receptacle 90-100 X 20 fi. Total length to tip ot pemoecium zo0 290 ,". 
On the legs, thorax, and abdomen of a minute fly. Berlin Museum, No. 1296. Kalum, New 
Pomerania. 
A form (fig. 28) which I am unable to separate satisfactorily from this spec* wj obtained from 
small fly sent me by Dr. Piper from Puyallup, Washing.....; and 1 have found a similar one a. Km- y 
Point, Me. The material is not very abundant l.ut the species seems too near 8. T*go*m for specific 
separation. The type from Ralum, figs. 25-20, is very nearly allied to S. mienndrm: but differs m the 
i • , p i x i__ i-u-* u* TKn onmiMA n»11 is ii 1 f ercalarv. be 
several points referred to under that species. 1 he spinose 
the basal cell of the appendage. 
the fourth above 
1-1 
Stigmatomyces constrictus Thaxter. Plate XL\ I, figs. 
Proc. Am. Acad. Arts and SeL, Vol. XXXVI, p. 401. March. 1901. 
pe 
the short 
l>e 
MUlll I1CCK dUUlll O IUU ILI it in ivn^iii, *w^ ^...-r— j ♦ a •-• '111 I 
Which mark the distal ends of the brown wall-cells of the venter, ^l.conual, with a ,.. I1 .dera 1,1,- snb- 
median enlargement often more prominent posteriorly; the tip often tapermg to the five-pap. .Da to apex 
the middle posterior papilla blunt and more prominent, the other four nearly symmetrica 1 »*£<** «f 
the appendage often suboblong and externally prominent throughout its length or only d, ally; he basa 
cell narrower* and longer, separated from it by a rather deep -onstnet.on and .„ar.ng three an. r 
distallv: while ahove it the single remaining fertile Cell is very >.„all, beann, m. anthend.a and foiled 
directly by the spinose terminal anthcridium; all the antheridia relatively large and almost free. R« ep- 
