NEW DIMORPHOiMYCETEAE. 231 



its lumen almost obliterated; the terminal cell longer and narrow, 

 terminated by a very short two-celled subconical appendage, dis- 

 tinguished by a broad blackish ring, the terminal cell minute and 

 more or less obliterated. Venter of the antheridium closely united 

 to the upper cell of the receptacle, slightly inflated, the region of 

 the efferent tubes concolorous with the long slender translucent brown 

 neck, which is bent over the terminal appendage and slightly curved 

 upward. Total length, including foot, (12 n) about 40 ijl, the append- 

 age 5.5 X 4.5 fx. Venter of antheridium, including efferent tubes, 

 12 X 6.5 m: the neck 24 X 2.5 /x. 



Female individual. Axis of the receptacle normally consisting of 

 three cells, the basal sometimes short and subtriangular, more often 

 longer, narrower and nearly uniform; the two remaining cells hardly 

 longer than broad, obliquely superposed, the lower larger; the upper 

 cutting off a small cell next the perithecium by a septum which lies 

 opposite the oblique insertion of the free divergent basal cell of the 

 primary appendage; which is nearly uniform, colorless, and separated 

 by a constriction and broad blackened septum from the abruptly 

 distinguished three celled terminal portion; the lower cell of which 

 is squarish and hyaline, the next slightly longer and broader and con- 

 colorous with the much longer olive brosvn terminal cell: the latter 

 slightly narrowed in the middle, and terminating in an abruptly 

 hyaline glandular subspherical tip, edged below with contrasting 

 blackish brown. Secondary appendage usually single, rarely two 

 subtended by small cells lying anterior to the subbasal cell; the first, 

 and usually the only one, having a considerably elongated basal cell, 

 united on its inner side to the lower third or more of the perithecium ; 

 its extremity, only, free and somewhat divergent, hyaline or slightly 

 involved by the olive brown suffusion of the rest of the appendage; 

 which is distinguished by a deep blackish septum and is similar to the 

 distal portion of the primary appendage, except that its base is three- 

 celled; the two lower cells squarish, both suffused, the third nearly 

 twice as long, the fourth usually bent slightly outward. Perithecium 

 hyaline, or becoming slightly suffused near the tip, nearly straight, 

 subsymmetrical, slightly enlarged below the rather abruptly dis- 

 tinguished hyaline relatively large apex, the broadly rounded slightly 

 sulcate extremity of which is subtended on either side by a distinct 

 prominence, the anterior somewhat lower. Spores, female, SOX 

 3.8 M, the apical segment very short. Perithecia 58-68 X 22 ju. 

 Primary appendage 75-80 X 8 m, its basal cell 15-21 ijl: free portion 

 of first secondary appendage 54-56 X 8.5 m- Total length to tip of 

 perithecium 100-125 /jl. 



