734 THAXTER. 



to the not' abruptly differentiated neck; the latter of nearly uniform 

 diameter, and distinguished from the almost equally broad tip and 

 apex by a very slight elevation; the apex, seen sidewise, abruptly 

 truncate distally; broad, flat, more prominent externally; or, if 

 turned one quarter, tending to appear truncate-conical: the wall-cells 

 of the venter and neck becoming more or less clearly spirally twisted 

 from left to right. Spore 30 X 3.6 n. Perithecia 140 X 30 /x (venter) 

 X 14 /i (neck). Appendage 50-55//; to tip of proliferous branches 

 70-80 ju. Receptacle 120-140 X IS m- Total length to tip of peri- 

 thecium 280-315 /x- 



On the thorax of Limosina jmnctipemiis Wied. Nos. 2733 and 2287, 

 Kamerun, West Africa. 



This species, which belongs to the group of S. Limosinae, is clearly 

 distinguished by its straight slender form, spiral wall-cells, and pro- 

 liferous appendage. The minute bodies which are separated from the 

 tips of the ultimate branches of these proliferations, and which finally 

 cohere in a viscous mass, appear to be abnormally developed sperm 

 cells, but their origin is quite unlike that of other known forms having 

 exogenous sperms. 



Stigmatomyces tortimasculus nov. sp. 



Short and rather stout, or more elongate and slender; nearly hyaline 

 except the faintly brownish yellow venter of the perithecium. Recep- 

 tacle variably elongate, tapering slightly to the usually curved base. 

 Stalk-cell of the appendage evenly and slightly convex throughout, 

 or somewhat concave below, distally abruptly broader than the narrow 

 insertion, which lies slightly higher than the base of the ascigerous 

 cavity. Axis of the appendage somewhat irregular, curAcd, and 

 lying sidewise against the venter; consisting of five cells, the terminal 

 one minute and forming a short blunt projection from the base of the 

 two distal antheridia; the basal cell relativelv small, distincth' vel- 

 lowish brown, as broad as long; the second and third longer, nearly 

 equal; the fourth smaller; all bearing usually two antheridia, the 

 distal ones somewhat clustered, the long free necks Aariously curved 

 and irregularly divergent in different directions. Stalk-cell of the 

 perithecium five-sided, broader than long, the secondary stalk-cell 

 obliquely separated from it, externally strongly con^-ex; the basal 

 cells small and triangular, ^>nter of the perithecium variable, often 

 relatively large, short and strongly inflated, much broader than the 



