400 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Stigmatomyces Scaptomyzae nov. sp. 



Venter of the perithecium becoming reddish amber browu, nearly iso- 

 diametric, becoming distally enlarged; the nearly hyaline neck very ab- 

 ruptly distinguished, slender, straight, or curved, its lower third sometimes 

 narrower ; the tip hardly or not at all differentiated ; the apex asymmet- 

 rical, the anterior lip-cells forming two lateral papillate slightly divergent 

 protrusions, the posterior lip-cells forming two similar protuberances 

 above them, between which a slight projection may or may not be pres- 

 ent. Stalk-cell of the appendage elongate, very abruptly broader than 

 the very small deep brown squarish infertile basal cell ; the fertile cells 

 usually five in number, the antheridia with short curved divergent necks 

 and produced in pairs, except the terminal one, which is conspicuously 

 spiniferous, the whole series usually obliquely external. Receptacle 

 hyaline, the basal cell mostly larger, longer, tapering below. Spores 

 about 36 X 3.5 fx. Perithecium: venter 90-100 X 36-44 //, ; neck 

 108 X 10-15 /x. Appendage 47-55 /x, the stalk-cell 25-30 ^. Receptacle 

 65-100 /x. Total length to tip of perithecium 300-325 /x. 



Ou the abdomen and legs of Scaptomyza graminum Fallen. Kittery 

 Point, Maine, vicinity of Cambridge, Mass., Berkeley, California. 



Stigmatomyces Limnophorae nov. sp. 



Venter of the perithecium relatively small, amber brown, the wall-cells 

 becoming powdered by a darker maculation and separated by a corre- 

 sponding number of well-defined unmodified longitudinal ridges which 

 run somewhat obliquely and end, not abruptly, at the base of the neck : 

 the latter generally slender, strongly bent throughout or even recurved, 

 abruptly differentiated, sometimes of less diameter than the tip, which is 

 distinguished from the rest of the neck by an abrupt enlargement more 

 prominent anteriorly ; the apex (in the not wholly mature types) un- 

 modified, blunt, slightly oblique. Stalk-cell of the appendage rather 

 prominently rounded externally, but not protruding abruptly below the 

 basal cell, which nearly equals it in length and is slender, slightly larger 

 distally, its base hyaline, its wall, which is dark amber brown above, be- 

 coming gradually thicker, so that the lumen of the cell is attenuated below, 

 distally bearing two antheridia ; the fertile cells above it, usually seven 

 in number, forming a series outwardly recurved, the terminal cell appar- 

 ently sterile, the two small cells below it bearing each a single antheridium, 

 while the remainder bear two; the antheridia with short, broad, slightly 

 recurved necks. Receptacle relatively large, hyaline, the basal cell ta- 



