EXTRA-AMERICAN LABOULBENIALES. 737 



except the twelfth, which bears only one and is followed by two others 

 superposed; the antheridia directed outward, and superposed in a 

 single row, with little if any right and left divergence. Stalk-cell of 

 the peritheciuni concolorous with the subbasal cell, ending below the 

 insertion of the appendage, somewhat prominent externally, obliquely 

 separated from the secondary cell, which overlaps less than half its 

 length; distally and externally prominent, and modified by a more 

 deeply colored secondary thickening, as are the upper outer angles of 

 the basal cells above. Basal cell region somewhat broader than the 

 base of the venter, which is somewhat inflated below, and prolonged 

 tlistally into a neck-like portion, with somewhat irregular margins, 

 which is rather abruptly swollen below its junction with the neck 

 proper: the latter paler, of nearly uniform diameter, slightly curved 

 outward, its junction with the tip broader and geniculate; the tip 

 bent outward, broad, slightly inflated, hardly distinguished from the 

 apex; which is bent upward slightly, short and truncate, the lips 

 hardly distinguished. Spores about 35 X 4 /z. Peritheciuni 320 X 

 40^. Appendage 140 X 14 m- Receptacle 115 X 2.5 m- Total 

 length somewhat over 500 ji. 



On the wings of a species of Diopsls. No. 2715, Kamerun, W. 

 Africa. 



Allied to the other species on Diopsis and distinguished by its great 

 length, twelve-celled appendage, and peculiarly shaped peritheciuni. 

 Only one quite mature indi^•idual has been examined. The w^all -cells 

 of the venter appear to be slightly twisted, but this cannot be clearly 

 made out in the type. 



Stigmatomyces porrectus nov. sp. 



Rather elongate, with somewhat irregular outline. Basal cell of 

 the receptacle obconical, slightly tinged with yellowish, a secondary 

 thickening involving the whole cell, its upper margin extending just 

 below and parallel to the horizontal septum which it may even touch; 

 the subbasal cell perfectly hyaline, abruptly narrower, usually dis- 

 tinctly shorter and subisodiametric. Stalk-cell of the appendage 

 relatively small, somewhat irregular, about twice as long as broad, 

 its lower half or more hyaline, the rest more or less tinged with yellow, 

 or brownish yellow, which is associated with secondary thickening; 

 the basal cell of the appendage as broad, or even slightly broader, 

 more deeply suffused, slightly broader than long, sterile; the subbasal 



