[00 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Stigmatomyces Scaptomyzae nov. sp. 



Venter of the peritliecium becoming reddish amber brown, 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 

 u>ually 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 /a. Perithecium: venter 90-100 x 36-44 /a; neck 

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

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



I in 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 u corre- 

 Bponding number of well-defined unmodified longitudinal ridges which 

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

 tin- 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. Blightl) larger 

 distally, if- 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. usuallv seven 



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

 ently sterile, the two -mall cells 1m 'low it bearing each a Bingle antheridium, 

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

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



