EXTRA-AMERICAN LABOULBENIALES. 725 



differs in its more highly developed appendage, differently arranged 

 stalk-cells, and by the oblique termination of its perithecium. The 

 basal cells of the perithecium are also peculiar, ending in a small abrupt 

 protrusion, the inner cell lying almost wholly against the ascigerous 

 cavity. 



Stigmatomyces Bprboridinus nov. sp. 



Receptacle hyaline, the basal cell tapering to a narrow base, broader 

 distally than the base of the subbasal cell; which is slightly more than 

 half as long, short and broad, its margins somewhat convex. Stalk- 

 cell of the appendage relatively short, its broad base somewhat oblique; 

 externally oblicjue below the broad insertion, which lies opposite the 

 upper end of the primary stalk-cell. Appendage consisting of three 

 clearlv defined vellowish brown cells, the basal somewhat darker and 

 more reddish, slightly longer than broad, the subbasal smaller, more 

 strongly convex externally, somewhat broader than long; both bearing 

 three superposed relatively large antheridia on the inner side, their 

 stout relatively long curved necks turned to the right, except the upper- 

 most; the third cell smaller than the subbasal, somewhat oblique, 

 followed by three antheridia which terminate the appendage; the 

 distal, outer, one sometimes replaced by a small permanently sterile 

 cell. Stalk-cell of the perithecium smaller than the cells above it, 

 very obliquely separated from the secondary stalk-cell, which is about 

 as large and long as the inner basal cell ; the outer basal cell large, over- 

 lapping the ascigerous cavity, and twice prominent externally below 

 the venter; the whole region forming a stout, well defined stalk. 

 Venter, which comprises about half the total length of the perithecium 

 and its stalk, pale brownish yellow, diverging at an angle of about 45° 

 from the common axis of the receptacle and appendage; the former 

 broader distally, hardly inflated ; the wall-cells prominent and ending 

 in conspicuous rounded projections, which abruptly distinguish the 

 slightly spreading base of the relatively stout, nearly hyaline, short 

 neck; the tip distinctly tinged with brownish yellow, well distinguished 

 by a general inflation, its margins almost symmetrically convex, 

 tapering distally to the short broad apex, the broad termination of 

 which is almost symmetrically truncate, or slightly rounded, without 

 projecting lips. Spores 36 X 5.5 m. Perithecia 100-120 X 28-32 ^u; 

 the whole stalk-part, including the primary stalk-cell which is free 

 only externally at its base, 35 yu by 20 ix above, by 14 ^x below. Ap- 

 pendage 42 X 22 ^ including tips of antheridia. Receptacle 50-64 X 

 17-20^1 distally. Total length to tip of perithecium 190-210 /x. 



