740 THAXTER. 



which is sUghtly and somewhat obHquely curxed inward, consisting 

 of three cells, the lowest much smaller, triangular-flattened, each 

 bearing a single rather large antheridium, the series terminated by a 

 fourth. Stalk- and basal cells all lying below the insertion of the 

 appendage, relatively small and subequal. Venter rather long and 

 narrow, and almost symmetrically inflated; the wall-cells separated 

 by a wing-like spiral ridge which makes nearly a half turn; neck 

 rather abruptly distinguished, the base hardly spreading, about half 

 as long as the center, nearly isodiametric, and swelling abruptly to 

 form a clearly distinguished subsymmetrical enlargement at its 

 junction with the tip; which, with the apex, forms a short blunt 

 termination, the rounded lip-edges rather coarse, slightly prominent, 

 and asymmetrical. Spores about 18 X 2.5 /i. Perithecia 110-120 X 

 28-30 /x: venter 68 /x. Appendage 35 X 9 m- Receptacle 45-55 X 

 16 fx. Total length 150-175 /x. 



On the anterior legs of a pale species of Drosophila. Kamerun, W. 

 Africa, No. 2180. 



This species is distinguished from other forms on Drosophilidae by 

 its four-celled appendage, which bears but four antheridia, and the 

 subterminal enlargement of the perithecium. The spiral ridges of 

 the venter are similar to those of S. Sigalossac, which is otherwise 

 cjuite different. 



Stigmatomyces varians nov. sp. 



Symmetrically somewhat sigmoid, the perithecium proper about 

 twice as long as the rest of the individual. Receptacle hyaline, usu- 

 ally yellowish distally and above the foot; the basal cell tapering 

 below, curved, often twice as long as, or less frequently slightly 

 shorter than, the subbasal cell; which may be distinctly prominent 

 above the basal, its distal end much broader, its margins usually 

 slightly concave. Stalk-cell of the appendage slightly more than 

 twice as long as broad, its distal third or more involved by a yellow 

 secondary thickening, its outer margin very slightly prominent below 

 the basal cell of the appendage, which is flattened, usually becoming 

 reddish, broader than long, without antheridia, surmounted by a still 

 shorter cell bearing two antheridia, which is followed by two axis-cells 

 bearing two antheridia each, and a third which bears one; the axis 

 ending in two terminal ones which are superposed, the upper larger 

 and indistinctly spinose; the appendage erect or sometimes slightly 



