THAXTER. — LABOULBENIACEiE. 475 



This species occurs not rarely on the anterior legs of its host, less 

 frequently on the borders of the elytra. It may be distinguished by 

 its pale amber color, large evenly inflated perithecium, and slender re- 

 ceptacle, the distal portion of which is relatively unusually reduced. 



Laboulbenia terminalis, nov. sp. 



Perithecium deeply suffused with smoky brown, slightly inflated, the 

 inner margin evenly curved outwards, the outer more nearly straight, 

 but bent abruptly outwards to the large prominent apex, the lips of 

 which are well defined and outwardly oblique. Appendages arising 

 from two basal cells, a very large outer and much smaller inner : the 

 outer giving rise to two cells each of which bears terminally from two 

 to three long slender tapering flexuous branches tinged, at least 

 basally, with reddish brown : the inner bearing a single cell as a rule 

 followed by two terminal cells which give rise to groups of two or 

 three rather slender sessile antheridia : insertion cell placed just below 

 the middle of the perithecium. Receptacle pointed below, broad 

 above, nearly hyaline or evenly tinged with brownish, cell (7) 

 slightly prominent below the perithecium. Spores 55 X 5.5 fx, Peri- 

 thecia 120-150 X 45-50 /x. Receptacle 200-220 /x. Total length to 

 tips of perithecium 275-340 /x.. 



On Pterostichus luctiiosus Dej. Maine and Massachusetts. 



This species occurs in tufts at the tips of the elytra or abdomen, 

 apparently never elsewhere. It is allied to forms of L. polyphaga 

 and L. Pterostichi, from which it is at once distinguished by its 

 perithecium. 



Laboulbenia rigida, nov. sp. 



More or less deeply tinged with olive-brown. Perithecium becoming 

 almost or quite opaque, somewhat inflated, a slight depression at its 

 base above the more or less bulging terminal portion of the receptacle, 

 its apex stout, snout-like, bent slightly inwards. Appendages arising 

 from two basal cells, the outer of which gives rise to a single simple 

 rigid branch, tapering slightly or not at all ; the inner producing two 

 similar somewhat shorter branches almost invariably simple and 

 bearing near the base solitary sessile antheridia. Receptacle nor- 

 mal, sometimes rather elongate. Spores 75 X 55 jx. Perithecia 

 125-150 X 10 /x. Appendages (longest) 300 /x. Receptacle 185- 

 300 /x. Total length to tip of perithecium (largest) 300 /x. 



On Pterostichus patruelis Dej. Maine and Massachusetts. 



