426 PROCEEDINGS OF THE AMERICAN ACADEMY, 



Dichomyces dubius nov. sp. 



Receptacle much as in D. princeps and similarly colored, smaller, 

 shorter, and stouter, antheridia large purplish ; the distal tier of cells 

 producing typically two, rarely more, perithecia, which are pale brown- 

 ish and dimorphous ; usually rather slender, tapering slightly, the pos- 

 terior lip-cells producing ear-like outgrowths recurved or bent forward 

 as in D. vulgatus : more rarely larger and stouter, the blunt, often asym- 

 metrical tip witliout appendages ; the two forms sometimes, but not 

 usually, associated on the same individual : external appendages normally 

 large, long, colorless, reaching to the middle of the perithecium or even 

 to its tip. Individuals asymmetrical, with a single antheridium and peri- 

 thecia of the second type, are not infrequently met with on the legs of the 

 host. Perithecia 70-00 X 20 /x, those without appendages 70-105 X 30 

 -35 /x. Spores 35 X 4^. Receptacle about 120 X 75|ii. Total length 

 to tip of perithecium average 190 /x. 



On Philonthus sp., Niagara Falls, New York. On all parts of host. 

 On hosts received from Mr. Charles Bullard. Possibly a variety of D. 

 princeps^ to which it is very closely allied. None of the abundant mate- 

 rial of the latter from different parts of the world, however, show any 

 tendency to produce an auricled type of perithecium. 



Dichomyces Peruvianus nov. sp. 



Receptacle with faint brownish shades especially along the septa, 

 almost in the form of two superposed isosceles triangles, the lower very 

 regular, including the basal cell and the first and second tiers, its distal 

 margin horizontal, the upper truncate at the base and distally concave. 

 The basal cell short, the lower tier consisting of from three to four cells, 

 nearly equal in length; the middle tier of typically thirteen cells, the 

 antheridia of medium size, the outer five cells distally appendiculate, one 

 of the appendages situated behind the antheridium as usual; the distal 

 series consisting of usually twenty-seven cells bearing typically four peri- 

 thecia, the appendages placed as usual, colorless, somewhat shorter than 

 the perithecia, which are mostly brownish externally and hyaline on the 

 inner side, the brown or reildish fawn color sometimes predominating, 

 asymmetrical, somewhat inflated, slightly bent inward near the tip which 

 is small, pointed, and well distinguished. Perithecia about 120 X 30/.*.. 

 Receptacle 207-240 X 140-175 /x. Appendages 185 /x (longest). Total 

 length to tip of perithecium 300-350 ,«. 



On Brachyderus simplex Sharp. In Dr. Sharp's Collection, Peru. 

 On elytra and abdomen. 



