696 THAXTER. 



neck-portion slightly curved, stout but rather abruptly distinguished, 

 of nearly uniform Avidth the very short, abruptly tapering tip distin- 

 guished only by a combined external protrusion from the distal ends 

 of its two outer wall-cells which may be hvmch-like or rounded, or 

 form an abrupt rather narrow divergent free projection; the apex 

 very short, the lips not at all prominent, forming together a more or 

 less evenly rounded papilla. Spores 30 X 4 /z. Perithecium 120- 

 140 X 30-45 IX, its protrusion to 16 yu. Receptacle 70-100 X 26 m- 

 Appendage 65-70 X 15 /z, its stalk-cell 25-27 X 12-14 /x. Total 

 length to tip of perithecium 225-275 jjl. 



On the thorax, wings and superior abdomen of Parydra pinguis 

 Walk. No. 1805, Fayetteville, Arkansas. 



This form is well distinguished by the peculiar subterminal pro- 

 jection from its perithecium. It is not usually in very good condition, 

 having a somewhat shriveled look, but was obtained from several 

 different individuals of its host, and does not vary to any great extent, 

 except in the form and comparative prominence of the subterminal 

 projection. 



Stigmatomyces Parydrae nov. sp. 



Form short and stout, usually strongly curved, dirty yellowish 

 brown, except the nearly hyaline, or but slightly suffused receptacle. 

 Basal cell of the receptacle usually strongly curved, tapering slightly 

 below, twice to several times as long as the subbasal cell; which is 

 squarish or even broader than long, and similar to, or but slightly 

 larger than, the five more or less similar irregularly subtriangular 

 cells of the stalk and basal cell region. Stalk-cell of the appendage 

 relatively short and stout, slightly narrower below and overlapping 

 the subbasal cell slightly, or not at all; hardly or but slightly promi- 

 nent below the basal cell of the appendage, which occupies its whole 

 distal surface. Appendage relatively large, somewhat curved inward, 

 lying somewhat obliquely sidewise against the perithecium, the necks 

 of the antheridia very short, stout, bent outward, the axis consisting of 

 normally five, sometimes four cells, all of which, except sometimes the 

 uppermost, bear two somewhat divergent antheridia, the series thus 

 partly double and ending in a single terminal one. Venter of perithe- 

 cium not distinguished from the basal cell region, both more deeply 

 suffused, its outer margin more strongly convex especially distally 

 where it curves inward to the well distinguished but relatively stout 

 neck-portion ; which is much shorter than the venter, distally slightly 



