NEW lABOULBENIALES. 687 



Stigmatomyces Discocerinae nov. sp. 



Typical form relatively short and stout, rather deeply suffused 

 with dirty amber-brown, except the nearly hyaline or slightly yellowish 

 receptacle. Receptacle more or less uniform and abruptly distin- 

 guished as a stalk-portion from the parts above; the basal cell usually 

 longer, its lower third often curved, tapering to the pointed base; the 

 subbasal cell often but slightly longer than broad, separated from the 

 basal by a more or less evident constriction, its outer membrane 

 usually, but not always, more or less conspicuously crinkled or cor- 

 rugated, the surface sometimes appearing transversely striate. Stalk- 

 cell of the appendage relatively short, its broad base slightly oblique, 

 its distal end somewhat broader, but not conspicuously bulging out- 

 ward below the broad insertion of the appendage. Appendage 

 short, compact, bearing a terminal spinose antheridium and five or 

 seven others, according as the axis consists of three or four small cells; 

 the basal similar, or but slightly larger than the others, and concolor- 

 ous; the terminal cell bearing one, the rest two, antheridia; their 

 necks short and stout, and directed sidewise; the appendage lying 

 flat against the peritheciimi. Stalk-cell of the perithecium broad, 

 five-sided, larger than the cells above it; which are subequal, except 

 the secondary stalk-cell, which is small and externally slightly promi- 

 nent; the outer basal cell abo^e it externally slightly concave, its 

 curvature continuous with that of the inflated base of the venter. 

 Venter oval or elliptical in outline, usually strongly and symmetri- 

 cally inflated, darker, the surface inconspicuously finely granular- 

 mottled, with a tendency to transverse striation; the broad spreading 

 base of the short neck abruptly distinguished, the margins of the latter 

 more or less concave, owing to a variably developed, but typically 

 conspicuous, distal enlargement which subtends the tip; the margins 

 of the tip also more or less distinctly concave, owing to a second 

 variably prominent distal enlargement at its junction with the apex; 

 the latter stout, its distal margin broad, slightly oblique when viewed 

 sidewise, with relatively large but not very prominent papillate lips. 

 Spores 30 X 3 /i. Perithecia 95-105 X 30-35 fi. x\ppendage 30 X 

 12 /i. Receptacle 35-55 X 12-15 ^i. Total length to tip of perithe- 

 cium 125-175 fjL. 



On species of Discocerina usually on the legs or thorax. Nos. 1848 

 (Type) and 1846, Balaclava; Nos. 1716 and 1727, Mandeville; No. 

 1923, Porous, and No. 2015, Clarkstown, Jamaica, W. I.; No. 2316, 



