748 THAXTER. 



five cells, the two lower producing usually three, the third and fourth 

 two, and the fifth one antheridium ; the appendage terminated by 

 two' which are superposed, the necks rather short and stout, and 

 directed obliquely sidewise. Stalk-cell of the perithecium about as 

 broad as long, o^•erlapped on the left side by the secondary stalk-cell, 

 which is slightly prominent externally; the basal cells subequal, 

 hardly prominent; \enter straight, its base nearly opposite the in- 

 sertion of the appendage, slightly and symmetrically inflated below, 

 the margins of the upper third often slightly concave, the surface 

 faintly granular, distally somewhat prominent below the spreading 

 base of the rather stout neck; which is almost exactly as long, slightly 

 tapering, or more often nearly isodiametric, slightly but abruptly 

 enlarged at its junction with the tip; the latter slightly bent inward, 

 somewhat tapering, the apex hardly distinguished, the lips oblique, 

 the outer being bluntly pointed and more prominent. Spores 30 X 

 3.0 tx. Perithecia 155-176 X 28-35 m- Appendage 50-65 X 7 m- Re- 

 ceptacle 70-80 X 18-20 M. Total length 210-280 /x. 



On the anterior surface of the head of a rather large dark fly with 

 mottled brown wings belonging to the Trypetidae? No. 2735, Kamerun, 

 W. Africa. 



Although this large rigid form does not seem referable to any of the 

 described species, it has no striking characters which would at once 

 distinguish it. The appendage normally bears thirteen antheridia, 

 but in some cases there appear to be only two on the two lower cells. 

 The appendage is so turned that it is diflficult to determine the antheri- 

 dial characters without a very high magnification. A large number 

 of individuals has been examined. 



Stigmatomyces Chilomenis nov. sp. 



Nearly hyaline, faintly tinged with greenish yellow. Receptacle 

 small, the basal cell much narrower and subgeniculate above the foot, 

 obliquely separated from the much smaller subtriangular subbasal 

 cell ; which is somewhat larger than the irregularly rounded stalk-cell 

 of the nearly erect appendage, the basal cell of which is longer than 

 broad, somewhat narrower below than the four subequal axis-cells 

 above it; which are somewhat broader than long, and each bear an 

 antheridium, the terminal cell bearing two, in the type, in addition 

 to the terminal antheridium : antheridia with long stiff nearly straight 

 necks directed obliquely upward and outward. Stalk-cell of the 



