EXTRA-AMERICAN LABOULBENIALES. 719 



basal cell of the appendage; which is hardly longer than broad, its 

 axis consisting of four successively smaller cells; those above the basal 

 paler, bearing each two antheridia, except the fourth, which bears but 

 one, and is succeeded by a second which is terminal; the antheridia 

 relatively short and stout, the necks turned usually sideways. Stalk- 

 cell of the perithecium concolorous with that of the appendage, as 

 are the cells above it, broader than long, distally in contact with the 

 broad base of the inner basal cell ; secondary stalk-cell wholly external 

 to it, somewhat prominent, half as large, subtriangular, obliquely 

 separated from it, as well as from the outer basal cell above; the latter 

 more deeply colored, and prominent below the large deeply colored 

 venter; which is asymmetrical, about twice as long as broad, distally 

 broader, externally less convex, and distally conspicuously prominent, 

 finely rough-granular, the wall-cells separated by slight furrows; the 

 inner margin more or less evenly convex, the remainder of the peri- 

 thecium almost exactly as long as the venter; the paler, abruptly 

 distinguished neck tapering very slightly from its spreading base; 

 the tip clearly distinguished, abruptly slightly narrower, tapering 

 Aery slightly, the apex not distinguished, short, subhyaline, with 

 slightly oblique inconspicuous nearly symmetrical papillate lips. 

 Spores about 25 X 2.5 p.. Perithecia 150-180 X 40-45 ju. Recep- 

 tacle 85-100 X 25-28 M- Appendage 46 X 10 m; its stalk-cell 

 25 X 10 M- Total length 250-280 fx. 



On the abdomen of a small fly belonging to the Agromyzidae. 

 Kamerun, No. 2283. 



A species apparently allied to S. Scapfomyzae, distinguished by the 

 peculiar modification of the subbasal cell of the receptacle, and the 

 granular roughening of the venter of the perithecium, both of which, 

 characters become more prominent in older specimens. 



Stigmatomyces divergens nov. sp. 



Subsigmoid, rather stout, rather dark red amber-brown, except the 

 hyaline receptacle; which is shorter than the perithecium, the cells 

 of about equal length, slightly curved. Basal cell of the appendage 

 short and stout, strongly convex externally, deeply suffused with 

 reddish brown, separated by a deep external constriction from the 

 narrow base of the basal cell of the appendage, the axis of which 

 consists of four cells; the basal about as broad as long, deeply suffused, 

 bearing no antheridia; the three others bearing each two; the series 



