THAXTER. — NEW LABOULBENIACEAE. 311 



Female individual, colorless. Primary receptacle consisting of four 

 superposed cells, the terminal one acuminate ; the subbasal giving rise 

 to a branch which produces a single secondary receptacle, made up of a 

 vertical series of cells, obliquely superposed, and variable in number, 

 giving rise above to a solitary perithecium. Perithecium erect, bent 

 inward toward the seta on which the individual grows, the ascigerous 

 portion hardly, or not at all, inflated ; the distal portion curved outward, 

 tapering to the pointed apex, which is subtended on the inner side by a 

 stout, bluntly rounded projection about as long as the free apex of the 

 perithecium which extends outward at right angles from its base. 

 Total length to tip of subterminal projection 1 60-225 p. Perithecium 

 150 X 33^, its terminal process 10 x 3.5^. 



On the anteunal setae of Platyzosteria ingens Scud., Mexico ; Scud- 

 der Collection, No. 1384. 



Acompsomyces brunneolus now sp. 



Colorless, the tip of the perithecium and its posterior margin suf- 

 fused with brown, the suffusion extending to the base of and including 

 the appendage. Receptacle short, the basal cell hyaline, relatively 

 large, slightly inflated above, tapering to the small foot ; the subbasal 

 cell very small, twice as broad as long ; the basal cell of the appendage 

 deeply suffused with blackish brown, especially externally ; relatively 

 small and short, the rest of the appendage much as in the other species, 

 somewhat narrow and suffused with brown. Stalk-cell of the perithecium 

 short, slightly longer than broad, the perithecium relatively large and 

 stout, nearly straight, the inner margin nearly straight, and suffused with 

 brown, the outer bent abruptly inward below the tip, which is brown, 

 short, stout, well differentiated, broadly truncate ; the lip-cells rising in 

 a truncate conical apiculus subtended by the four clearly distinguished 

 broad subterminal wall-cells. Total length to tip of perithecium 125^. 

 Perithecium 80 X 20 ^, the stalk-cell 12 X 10 /u. Receptacle 28 X 12^. 

 Appendage to tip of spine 45 x 10/*, the basal cell 10 [a long. 



Near the base of the right elytron of Corticaria sp., Kittery Point, 

 Maine. 



Stigmatomyces Elachipterae nov. sp. 



Receptacle hyaline, the basal and subbasal cells of nearly equal length, 

 the former more or less distinctly inflated distally in the region of a partial 

 septum, above which it may be somewhat faintly marked by transverse 

 lines ; the lower portion having its walls thickened from above downward 



