THAXTEE, — NEW LABOULBENIACE^. 421 



Perithecia 130-140 X 22 /x. Receptacle 130-140 X 22 jm. Total length 

 to tip of perithecium 250-275 /x. 



On Philonthus xanthomerus Kraatz., British Museum (Biologia Coll.), 

 No. 751, San Andres, Vera Cruz. On antennae and anal appendages. 



Dichomyces Angolensis nov. sp. 



Basal cell hyaline. Lower tier opaque or the middle cell subhyaline, 

 the marginal cells opaque, extending up on either side of the middle tier : 

 middle tier relatively large, consisting of about thirteen to sixteen hyaline 

 cells, the three to four external ones continuing the margin of the first 

 tier directly and either subhyaline or blackened below, each bearing a 

 normal appendage; the antheridia of medium size, brownish: upper tier 

 smaller, shorter, and narrower than the middle one, consisting of from 

 thirteen to fifteen hyaline cells : distally slightly concave, bearing a pair 

 of perithecia, the appendages small, hyaline. Perithecium large and 

 stout straight, faintly brownish, slightly inflated, tapering distally to the 

 nearly symmetrical truncate apex. Perithecia 120-135 X 30 /x. Length 

 to the tip of perithecium 250 /a. Greatest length of receptacle 140 

 X 75 fx. 



On Philonthus sp. indet. British Museum, No. 379. Angola, Afiica. 

 On elytra. 



Dichomyces insignis nov. sp. 



Basal cell sufi'used with reddish brown or partly hyaline; the lower 

 tier wholly opaque or translucent along the median line; the middle tier 

 consisting of about thirteen to seventeen cells, exclusive of those which 

 are indistinguishable in the slender fork-like prolongations which extend 

 on either side higher than the middle of the upper tier, the margin broadly 

 blackened, continuous with the opaque margin of the lower tier; the 

 lower portion of the three to five median cells marked by a few large 

 scattered transversely elongated brown patches which merg^e on either 

 side into the opacity of the marginal cells; antheridia very large, the 

 venter slightly inflated, the neck sharply pointed, conical, brown, often 

 abruptly contrasting, three to five of the cells immediately external to 

 them bearing normal brownish appendages : distal tier very large sub- 

 triangular, distally concave, consisting of from twenty-nine to thirty-nine 

 narrow and elongated cells and bearing from four to eight perithecia 

 with some irregularity ; the appendages brownish, paired above the sub- 

 tending cell, not as long as the perithecia. Perithecia relatively small. 



