216 THAXTER. 



discharging its bacillus-like antherozoids into a large cavity and out 

 through a well developed neck. 



Female individual. Receptacle consisting of five superposed cells, 

 terminated by a two-celled undifferentiated appendage, a single peri- 

 thecium arising from the third cell. Stalk- and basal cells of the 

 perithecium obliterated at maturity, the cavity continuous below the 

 ascogenous cell to the insertion. 



Except for the greater number of cells in its receptacle, the female 

 of this type closely resembles that of Nyderomyces to which it is most 

 nearly allied. The male, however, differs widelv in possessing a 

 single terminal antheridium, which is more highly developed than 

 that of any other genus, with the exception of Kumonoicomycrs. 



Polyandromyces Coptosomalis nov. sp. 



Male individunl. Basal cell of receptacle relatively large and long, 

 hyaline or yellowish, straight or often strongly curved, obliquely 

 adjusted to the small triangular brownish yellow subbasal cell. 

 Antheridium straight, erect, reddish brown below, the base of the 

 venter darker; the stalk-cell squarish, or slightly broader than long; 

 the venter relatively large, symmetrical, somewhat inflated, often 

 rather abruptly broader; the efferent chamber large, almost dome- 

 shaped, separated by a slight constriction from the characteristic 

 enlargement which forms the base of the efferent neck. Antheridium 

 64 X 25 m; stalk-cell 16 X 16-21 m; venter 30 X 26 /x; efferent 

 chamber 125 X 16 a^; neck 22 n. Total length, average, 135 ijl. 



Female individual yellowish, becoming more or less deeply tinged 

 with reddish brown. Receptacle consisting of five obliquely super- 

 posed cells; the basal larger, the subbasal separating a small cell 

 which subtends, externally, the short stalk of the perithecium which 

 arises from the third cell: the fourth cell smaller than the rest, nar- 

 rowly triangular, oblique: appendage erect or suberect, the distal 

 cell slightly longer, somewhat tapering and bluntly rounded. Perithe- 

 cium erect, nearly symmetrical above the very short curved stalk, 

 the margins slightly and symmetrically convex: the tip clearly dis- 

 tinguished by a more prominent basal and less distinct distal eleva- 

 tion and intervening depression: apex Aery short, abruptly defined, 

 distally flattened or slightly rounded. Perithecia 24-280-50-55 /x. 

 Appendage 30 X 20 ix. Receptacle 105 X 34 m- Total length to 

 tip of perithecium 300-345 n. 



