692 THAXTER. 



Stigmatomyces borealis nov. sp. 



Slightly bent in the middle, rather small and stout, the clear hya- 

 line receptacle contrasting with the clear amber-brown or yellow 

 uniform suffusion of the portions above; the basal cell becoming 

 slightly suffused with brownish at maturity, the suffusion involving 

 the base of the subbasal cell. Receptacle rather short, the posterior 

 walls distinctly thicker, slightly broader at the septum, the basal cell 

 tapering throughout to the foot, more than twice as long as the sub- 

 basal, which is usually hardly longer than broad, and separated by a 

 slightly oblique septum. Stalk-cell of the appendage overlapping 

 the subbasal cell slightly, short, its external margin slightly concave, 

 distally somewhat broader than the insertion. Appendage lying 

 flatwise against the perithecium, with the insertion somewhat above 

 the base of the ascigerous cavity; erect, somewhat tapering, as long 

 or nearly as long as the venter, consisting of three cells; the basal 

 slightly longer than broad, the subbasal but slightly smaller and sub- 

 triangular, both bearing two closely associated antheridia with short 

 somewhat divergent necks; the third smaller and bearing a single 

 antheridium, followed by the terminal one which bears a small spine. 

 Stalk-cell and secondary stalk-cell of the perithecium nearly equal and 

 similar, flattened subtriangular and relatively small, the latter wholly 

 separated from the subbasal cell; the basal cells of the perithecium 

 smaller, uniform, hardly protruding. Perithecium stout, usually 

 considerably larger than all the other portions combined, more or 

 less strongly falcate, the inner margin slightly concave, the outer 

 strongly convex; the venter relatively large and broad, tapering to 

 the hardly ditt'erentiated distal portion; the neck distinguished by a 

 scarcely perceptible contraction, half or less than half as long as the 

 venter; the tip slightly distinguished, more clearly so externally, 

 much shorter than the wholly undift'erentiated apex which tapers to 

 a blunt point, the outer lips forming a slight angular prominence. 

 Spores 34 X 3.5//. Perithecia 96-110 X 30-40 m- Appendage 48 m- 

 Receptacle 60-85 X 22-24 /t. Total length to tip of perithecium 

 150-200 M. 



At the base of the posterior legs of Parydra imitans Loew., No. 

 1372, Kittery Point, Maine. 



Of the sixteen individuals which have been examined and include 

 fully matured conditions, one is much more slender and elongate 

 than the others, which are very uniform, and measures 265 /x in total 



