680 ' THAXTEK. 



slightly sulcate termination; the lips rounded, the outer much broader 

 and somewhat more prominent. Spores ,36 X 4 /^. Peritheeia 100- 

 110 X 30-35 Ai. Appendage 45-50 X 16 m- Receptacle 55-65 X 14- 

 16 jjL just below the septum. Total length to tip of perithecium 150- 

 175 /x. 



On the superior surface of the thorax of Ochtheroidea spp., No. 

 2826, Port of Spain, Trinidad, B. W. I.: No. 2519, Bocas del Toro, 

 Panama, (Rorer). No 2062, Grenada, B. W. I. 



In general form this species resembles S. humilis, S. borcalis and 

 S. brevicoUis, but differs in the character of its appendage and in other 

 minor points. The mottling of the perithecium is clearly seen with 

 higher magnifications, and in the Trinidad specimens the basal cell 

 is transversely punctate, and less clearly so in those from Grenada, 

 although in the single specimen from Panama this cell is unmodified. 



Stigmatomyces compressus nov. sp. 



Erect, usually straight, rather deeply suffused with clear amber- 

 brown, except the hyaline receptacle; which is often slightly bent, 

 its anterior margin more or less strongly convex, its distal end some- 

 times conspicuously broader than the base of the subbasal cell ; which 

 is separated from it by a usually slightly oblique septum, and is dis- 

 tinctly shorter, its distal margin oblique. Stalk-cell of the appendage 

 concolorous with the more deeply suifused venter of the perithecium, 

 relatively large and stout, abruptly prominent above the subbasal 

 cell, which it overlaps one third, or usually much less, and below the 

 insertion of the appendage; which is rather broad and distinguished 

 by a deeply suffused concolorous septum. Appendage rather stout; 

 consisting of four cells successively slightly smaller; the basal and 

 subbasal bearing two, while the two upper bear single antheridia, 

 the series ending in a terminal one with an external spine. Stalk-cell 

 of the perithecium flattened, five-sided, obliquely separated from the 

 subbasal cell of the receptacle; the cells above it more or less uniform, 

 slightly smaller, subtriangular, the two external ones with somewhat 

 convex margins : venter straight, erect comprising about one half the 

 total length of the perithecium, almost symmetrically inflated, its sur- 

 face granular or irregularly mottled, sometimes with indistinct small 

 elevated patches: the neck abruptly distinguished, stout, spreading 

 slightly at the base, as well as distally below the tip; which is thus 

 rather clearly distinguished, as broad as the mid-portion of the neck; 



