EXTRA-AMERICAN- LABOULBENIALES. 729 



nated by one or two small e^-anescent hyaline cells (or untheridia ?) ; 

 the outer margin nearly straight, the antheridia single appressed. 

 Stalk-cell of the perithecium squarish, about as large as the stalk-cell 

 of the appendage which lies Ijeside it, hardly o\-erlapped by the exter- 

 ally convex and somewhat longer secondary stalk-cell, below which 

 it is somewhat prominent, in distal contact with the base of the verti- 

 cally elongate narrow inner basal cell; the three external cells of the 

 region separated by distinct indentations, the basal cell region abruptly 

 somewhat narrower; \enter somewhat asymmetrical, broader distally 

 where it is usually more prominent, or bears an abrupt elevation on 

 the inner side, abruptly distinguishing the distal portion, which is 

 irregularly bent in a subsigmoid curve; the neck, tip and apex not 

 distinguished, tapering distally, and ending in a short, bluntly rounded, 

 finger-like projection formed on the inner side by one of the lip-cells, 

 the others forming slight prominences below it, irregularly placed. 

 Spores 34 X 3.5 m- Perithecia 85-100 X 26-28 /x, its projection 10 X 

 5/x. Receptacle 40-50 X 14 yu. Api^endage about 50 ;U. Total length 

 about 150 iJL. 



On the head of Limosina inuictipcnnis Wied. No. 2653, Kamerun, 

 West Africa. 



This species does not correspond closely to any of the other forms 

 which occur on Borboridae, and is well distinguished by its strongly 

 arcuate habit and terminal process. The cells of the appendage are 

 not externally convex, and in all but a few of the specimens examined 

 only the four lower cells remain. The distal portion of the appendage 

 appears to become rapidly disorganized, and where it still persists it 

 is not clear which of the cells present are axis-cells and which are 

 antheridia. 



Stigmatomyces^laticollis nov. sp. 



Nearly hyaline, the perithecia slightly suffused. Receptacle rela- 

 tively short, the cells subequal, separated by a slightly oblique septum; 

 the basal somewhat narrower below, its anterior margin distally 

 rather strongly convex, its axis forming a slight angle with that of the 

 subbasal cell. Stalk-cell of the appendage somewhat larger than that 

 of the perithecium which lies beside it; externally slightly convex 

 throughout, more strongly so below the narrow insertion which lies 

 slightly higher than the end of the primary stalk-cell. Axis of the 

 appendage consisting of about seven to nine cells; the basal small, 

 brown, flattened, distally broader; the subbasal nearly as large or 



