THAXTER. — NEW LABOULBENIACEAE. 45 



extending down beside and to the base of cell II ; the cells above it 

 also suffused and more or less indistinguishable. Insertion-cell large 

 and unmodified, bearing a group of cells as in L. orientah's, which give 

 rise to three crest-like series of branches ; one outer and two inner and 

 lateral ; the outer series antero-posterior, the inner ones obliquely lat- 

 eral ; the branches closely set, about four or five in each series, and two 

 to four times successively branched in the plane of the series ; the basal 

 cells sometimes bearing more than two branchlets, the cells subequal, 

 slightly inflated, the septa, except those of the distal cells, dark blackish ; 

 the whole mass curved outward, and slightly downward, forming a short 

 dense, rather compact tuft. Spores 80 X 5 p. Perithecia 235 X 70 fi. 

 Receptacle 185 X 70 /a. Appendages 100-150 fx. Total length to tip 

 of perithecium, average, 420 /x. 



On anterior legs of Brack inus sp., Japan; Sharp Collection, No. 1188. 



Laboulbenia Latonae now sp. 



Perithecium and receptacle much as in the larger and more typical 

 forms of L. " elongata " ; the perithecium usually deep brown, nearly 

 opaque ; the receptacle often enormously developed through the elonga- 

 tion of cell II. The outer appendage Consisting of a large, broad, sub- 

 hyaline basal cell, which gives rise to two or more, often three, or rarely 

 more, branches in a crest-like radial series, their basal cells small squarish 

 subhyaline; producing, as a rule, a pair of greatly elongated simple 

 deep rich brown flexuous tapering branchlets ; the basal cell of the 

 inner appendage giving rise in general to a branch on either side, one 

 of which resembles the branches of the outer appendage, and gives rise to 

 long slender brown branchlets ; the other commonly short, and bearing 

 one or two antheridial branchlets ; the small straight antheridia borne in 

 compact groups of two to four members. Spores 70 X 5 \x. Perithecia 

 175-220 X 60 fx. Longest appendages 1150^, the average 750 jx. 

 Total length to tip of perithecium 325-1125 /u. 



On all parts of Latona Spinolae Gucr., Bogota ; Berlin Museum, No. 



834. 



Laboulbenia media nov. sp. 



Perithecium usually narrow, straight, erect, sometimes slightly in- 

 flated, the basal wall-cells forming a relatively long, well-distinguished, 

 hyaline or subhyaline stalk ; the basal cells vertically elongated ; the 

 ascigerous portion marked by distinct transverse blackish stiiations 

 throughout, and becoming opaque or nearly so ; the tip erect, the apex 

 slightly asymmetrical, subtended by a darker shade on the inner side. 



