812 PROCEEDINGS OF THE AMERICAN ACADEMY. 



in a characteristically laminate fashion. Stalk-cell of the appendage 

 abruptly distinguished from its much narrower basal cell, which becomes 

 considerably broader distally ; a rather large cell being separated from 

 it terminally, bearing three antheridia : above it the appendage consists 

 of three cells, the upper very small, bearing in all normally five auther- 

 idia, including the spinose terminal one. Venter of the perithecium 

 pale amber-brown ; the wall-cells bulging conspicuously throughout their 

 length, and rather abruptly distinguished above the neck, usually 

 stout and somewhat shorter than the venter; the tip asymmetrical, and 

 slightly oblique, with projecting bluntly pointed apex. Perithecium, 

 venter 55-05 X 30^, neck 50 X 16-20 /u. Appendage 80-90 /x, the stalk- 

 cell 15-20 «. Receptacle about 65 x 18^. Spores 40 X 3.5^. 

 On Elachiptera lonyula Loew., Intervale, New Hampshire. 



Stigmatomyces micrandrus nov. sp. 



Venter of the perithecium, together with its basal cells and the stalk- 

 cells of the appendage, dark amber-brown, symmetrically oval, or typi- 

 cally subcorneal; at maturity roughened by numerous transverse, not very 

 prominent, ridges ; the neck usually longer than the venter, slender, 

 nearly cylindrical above its slightly spreading base, and usually more or 

 less distinctly curved ; the tip slightly narrower, and subtended by slight 

 elevations, distally asymmetrical, somewhat oblique, the lip-cells promi- 

 nent, somewhat pointed and divergent, subtending a pointed prominent 

 apex. Basal cells of the perithecium small, subequal, and characteris- 

 tically prominent. Receptacle typically rather short and stout, the two 

 cells subequal, or the subbasal cell more or less elongate, finally more or 

 less distinctly marked by transverse striations. Stalk-cell of the ap- 

 pendage rather short, more or less prominent : the basal cell abruptly 

 narrower, squarish, brown, bearing a single antheridium; the rest of the 

 appendage short and stout, hyaline, consisting of two superposed cells, 

 each bearing two antheridia, surmounted by the single terminal spinose 

 antheridium. Spores 45 X 4/x. Perithecium, venter 72-80 X 50-60 [a, 

 the neck 140-150 X 16-18 //.. Appendage above stalk-cell 35-40 /n ; the 

 stalk-cell 20^. Receptacle 90-110x30 p. Total length to tip of 

 perithecium 275-325 p. 



On the superior surface of the abdomen of a small blackish fly, Ralum, 

 New Pomerania ; Berlin Museum, No. 1284. 



