EXTRA-AMERICAN LABOULBENIALES. 747 



clistally below the basal cell of the appendage, which is nearly twice 

 as long as broad ; the axis of the appendage consisting of three cells, 

 the two lower bearing each two, the third a single antheridium; a sixth 

 terminal antheridium bent outward, its inner margin strongly convex, 

 with a conspicuous subterminal spine; the series turned sidewise or out- 

 ward. Stalk-cell of the perithecium slightly larger than the secondary 

 cell and separated by an oblique septum; the outer basal cell smaller 

 than the somewhat rounded inner one, and distinctly prominent 

 externally below the A'enter, which broadens somewhat gradually from 

 base to apex; its surface very finely and inconspicuously granular, its 

 base somewhat higher than the insertion of the appendage, the margins 

 often slightly convex ; the spreading base of the neck sometimes rather 

 abruptly distinguished; the neck for the most part somewhat longer 

 than the venter, often slightly narrower in the middle, broader distally 

 below the rather abruptly distinguished tip; tip and apex hardly 

 distinguished, slightly bent and tapering, the lip-cells five-papillate, 

 the two posterior lower, the middle of the three others highest. Spores 

 28-30 X 3.5 M- Perithecium 150-180 X 32-38 /x- Appendage 55 X 

 10 M. Receptacle 120-190 X 24-28 m- Total length 280-300 /jl or 

 less; maximum 370 X 42 /x. 



On the superior abdomen and legs of a fly belonging to the Try- 

 petidae. No. 2296 and 2642, Kamerun, W. Africa. 



Although less rigid and regular in outline, this species recalls S. 

 separatiis in general appearance and coloration. It is at once dis- 

 tinguished by its appendage, which is three-celled, and bears but six 

 antheridia; the terminal one rather characteristically inflated on the 

 inner side, and spinose. Abundant material has been examined. 



Stigmatomyces separatus nov. sp. 



Habit rigid and straight, or the neck and tip bent at a slight angle 

 to^the venter. Receptacle hyaline, sub-isodiametric, or tapering very 

 slightly from apex to base; the basal cell about two thirds as long as 

 the subbasal; the septa horizontal, both cells hyaline and contrasting 

 with the dirty reddish brown suffusion of the part abo\-e, which 

 includes the venter of the perithecium. Stalk-cell of the appendage 

 overlapping the subbasal cell very slightly, about twice as broad as 

 long, its external margin straight or more often concave, distally 

 rather abruptly prominent below the concolorous basal cell of the 

 appendage; which is otherwise paler yellowish, its axis consisting of 



