420 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Dichomyces Javanus nov. sp. 



Perithecium as long or longer than the receptacle, clear dark reddish 

 brown, translucent, straight or slightly curved, rather slender, of about 

 the same diameter throughout, the tip usually abruptly distinguished, 

 and more or less conspicuously bent to one side, tapering but little to the 

 rather broad blunt undifferentiated apex. Receptacle rather narrow, the 

 basal cell dark red-brown below, nearly hyaline above; the central cell 

 of the lower tier dark red or red-brown, lighter or hyaline at the base ; 

 the cells on either side symmetrical blackish brown opaque, extending 

 upward so as to partly enclose the base of the second tier, the margins of 

 the two tiers coincident: the second tier composed of from seven to nine 

 cells, hyaline or becoming suffused below with reddish brown, bearing a 

 well defined sharply pointed purplish slightly asymmetrical antheridium, 

 on either side, which are subtended by from one to two typical rather 

 short appendages : the upper tier very similar to the middle or slightly 

 larger, nearly hyaline, the single perithecium rising to the right of the 

 median appendage, the right half of the tier thus somewhat larger and 

 higher than the left, three typical appendages usually present on either 

 side. Perithecia 145 X 26 /x. Spores about 36 X 4 ^m. Receptacle 

 120-140 X 50 /A. Total length to tip of perithecium 250-275 /x. 



On Plulonthus sp. British Museum, No. 375. On abdomen. 



Dichomyces exilis nov. sp. 



Basal cell hyaline. Median cell of lower tier deeply suffused with 

 brown but not opaque ; marginal cells wholly opaque or translucent on 

 the inner margins, extending upward so as to enclose the base of the 

 second tier; second tier consisting typically of thirteen cells, colorless or 

 partly suffused with brownish, the antheridia large brownish straight or 

 slightly curved, the venter inflated, the cells external to them appendicu- 

 late, the outer three free above the marginal prolongation of the lower 

 tier and forming a short blunt projection on either side : upper tier like 

 the middle one mostly somewhat longer and narrower, consisting of from 

 thirteen to fifteen cells, the sub-median ones nearly triangular and for the 

 most part distally overlapped by the external cells next in order and the 

 basal cells of the perithecia. Perithecia typically two, pale brownish 

 amber, long and narrow, slightly if at all inflated, tapering gradually to 

 the undifferentiated broad nearly truncate apex. Spores 35 X 4 ju,. 



