THAXTER. — NEW LABOULBENIACEAE. 317 



Laboulbenia rotundata nov. sp. 



Perithecium. deep brown, except below tbe tip ; broadly rounded, tbe 

 inner margin of tbe upper balf free above tbe insertion-cells, and formed 

 by a single long cell extending to the tip, somewhat as in L. fallax, and 

 perhaps representing a marginal extension of the receptacle, as in that 

 species. The tip blunt, with two minute inner tooth-like prominences of 

 unequal size, the larger subtended by a narrow black suffusion, the whole 

 tip more deeply suffused externally. Receptacle straight, elongate, taper- 

 ing throughout to the base, the basal cell more deeply suffused distally, 

 and protruding somewhat anteriorly below the subbasal cell, which is 

 pale dirty yellowish-brown, inconspicuously granular-punctate : the distal 

 portion dark dirty brown, the cell-boundaries hardly visible. The inser- 

 tion cells small, giving rise to numerous (a dozen or more, for the most 

 part broken in the type) primary slender clavate cells, from which closely 

 septate short branchlets arise externally. Perithecium 185 X 65^, not 

 including the marginal cell, which is 18 t u broad. Receptacle 3G0 ,u. 

 Appendages (broken) about 50 ^ Total length to tip of perithecium 

 45CV 



On Dineuies spinosus, Java; Sharp Collection, No. 1086. 



Laboulbenia Chaetophora nov. sp. 



Perithecium dirty olive brown, straight, subconical ; the upper two- 

 thirds free, tapering from a broad base, tbe wall-cells with a distinct 

 spiral twist, very slightly enlarged below the tip, which is slightly, but 

 rather abruptly, distinguished, symmetrical, black, except distally ; the 

 apex rounded, and bearing an erect shorter, and an externally divergent, 

 much longer, straight, black-brown, spine-like process. Receptacle broad, 

 distally tapering to a slender base ; the basal and subbasal cells about 

 equal in length, dirty yellowish; cells III and VI about equal in length, 

 much darker ; the cells above them almost opaque, bulging externally 

 below the insertion cells, which bear numerous short, rounded appendicu- 

 late cells, one or two of them larger and opaque ; the branches numerous, 

 the branchlets similar to those which in general characterize species of 

 this section of the genus (mostly broken in the type). Perithecia 380 

 X 110 (x, the longer spine 40 fi. Receptacle 525//, or over. Total 

 length to tip of perithecium 800 X 185^. 



On the tip of abdomeu of Dineutes solitartus, Madagascar (?); Sharp 

 Collection, No. 1075. 



