THAXTER. — NEW LABOULBENIACE^. 413 



Monoicomyces Brittanieus nor. sp. 



Nearly or quite hyaline. General structure as in M. Homalotce, the 

 sterile portion of the receptacle small and inconspicuous, the terminal 

 cell in the form of a short hyaline simple appendage. Fertile branches 

 consisting of a single cell bearing the antheridium and perithecium as in 

 M. Homalotce. Perithecium rather long-stalked, slightly asymmetrical or 

 bent, the base inflated, tapering gradually to the blunt undifferentiated 

 tip. Antheridium borne on a pair of rather long stalk-cells, the basal 

 cells almost exactly similar to them and distally not enclosing any por- 

 tion of the antheridial cavity, the wall cells well developed, the cavity 

 within them relatively small, the terminal cells growing up into gen- 

 erally stout finger-like processes which may extend above the tip of the 

 perithecium. Perithecium, including basal cells, 90 X 30 /x. Antheridia 

 to base of terminal projections 80 X 20 it. 



On Homalota tnsecta Thorn., British Museum, No. 454, Hammer- 

 smith, England. On superior surface of abdomen. 



Monoicomyces St. Helenae nov. sp. 



Superficially resembling Compsomyces in general habit. Pale yel- 

 lowish or straw colored. Receptacle consisting of a triangular basal and 

 a squarish or roundish subbasal cell which bears a small distal cell with 

 a short terminal appendage separated from it by a constricted blackish 

 septum; two to four branches arising from the subbasal cell, normally 

 fertile and consisting of from two to five, usually three, superposed cells 

 which are commonly somewhat inflated distally, more so on one side, an 

 upgrowth from which becomes separated so as to form a prominent small 

 cell lying close against the base of the axis-cell next above and is simple 

 or longitudinally divided ; in the former case bearing one, in the latter 

 a pair of peculiar short appendages from which they are separated by a 

 conspicuously blackened septum ; the basal cell of this appendage usually 

 similarly blackened externally, as is the base of the cell above it, which is 

 usually characteristically geniculate, its terminal portion erect suffused 

 with brown or hyaline, and either terminating the appendage or followed 

 by two or three hyaline cells. Perithecium symmetrically inflated slightly 

 distinguished from the basal cells, the tip small straight truncate tapering 

 but slightly and abruptly distinguished. The antheridium relatively 

 small, its stalk and basal cells about equal, the antheridium proper about 

 as large as the basal part and hardly broader, its terminal cells develop- 

 ing as in the other species to long flexuous hyaline upgrowths. Spores 



