NEW LABOULBENIALES. 693 



length. The species is of a mondescript type without well marked 

 distinguishing peculiarities, yet I am unable to include it in any of the 

 other species found on Ephydridae. In general form it resembles 

 (S. humills, S. Ochilirroidcac and S. brevicollis which, however, differ in 

 the character of their appendages, as well as in minor points. 



Stigmatomyces lingulatus nov. sp. 



General habit rather elongate with a slight median twist, arcuate, 

 or even distally recurved. Receptacle pale yellowish, rather long, 

 stout, more or less conspicuously wider in the middle in the region of 

 the septum, the two cells of nearly equal length, the subbasal more 

 often distinctly narrower distally. Stalk-cell of the appendage 

 turned partly sidewise, more deeply suffused, rather short, barely 

 overlapping the subbasal cell, somewhat prominently rounded below 

 the insertion, which lies somewhat above the base of the ascigerous 

 cavity. Appendage persistent, concolorous with the venter; its axis 

 consisting of three cells, the basal twice or somewhat more than twice 

 as long as broad, the subbasal flattened, two sided, both bearing two 

 antheridia; the third smaller and bearing a single antheridium which 

 is followed by the terminal one, the necks of the series of six having 

 a distinct right and left divergence. Stalk-cell of the perithecium 

 small, flattened, subtriangular, paler than the cells above it; which are 

 more or less similar, concolorous with the venter, and not externally 

 prominent. Venter of the perithecium very faintly granular, the 

 inner margin nearly straight, or slightly concave, the outer strongly 

 and evenly convex ; the wall-cells terminating in rather inconspicuous 

 individual prominences, which render the transition to the neck 

 abrupt: distal portion of the perithecium considerably longer than 

 the venter, strongly and rather evenly curved ; the neck hyaline and 

 narrower below, the distal third and the short undifferentiated tip 

 becoming distally broader; the apex but slightly shorter than the tip, 

 not distinguished, very slightly geniculate, two of the lip-cells com- 

 bined and prolonged to form a symmetrical tongue-like prolongation 

 tapering to a blunt extremity, and extending free beyond the broader 

 blunt termination of the other two lip-cells. Spores 38 X 4.5 fx. 

 Perithecia; venter 70-80 X 40 m; the distal portion 90-100 X 14 /x 

 near the base and X 18 /u distally. Appendage 75-80 X 12-14 m; 

 the basal cell 24 X 10 ^t; the stalk-cell 30m- Receptacle 115-135 X 

 24-28 M in the mid-region. Total length to tip of perithecium 300 fj. 

 or somewhat more. 



