412 PROCEEDINGS OP THE AMERICAN ACADEMY. 



MONOICOMYCES - 



l; ceptacle consisting of a basal and subbasal cell, above which it ter- 

 minates in :i Bmall two-celled Bterile portion, the terminal cell of which 

 may or may not be in the form of ;i short appendage; the Bubbasal cell 

 giving rise to from one t" Beveral Fertile branches, the habit becoming 

 thus unilateral, bilateral <>r Bubverticillate in different sped* j, The f< r- 

 tile branches consisting of from one t" Beveral cells in different Bpecies, 

 the terminal cell of each branch normally giving rise to a stalked peri- 

 thecium and a stalked antheridium ; the remainder, if there arc more 

 than one. appendiculate on the upper side, rarely (abnormally ?) produc- 

 ing an additional aiitlicridiiun. Antheridium of the compi und type, con- 

 sisting of a .-talk composed of a pair of cells, the antheridium proper 

 consisting of certain basal cells, two tiers of peripheral cells, which sur- 

 round (not on all sides?) numerous antheridial cells and a cavity ah 

 them, and three or four terminal cells, which appear to surround an open- 

 ing through which the antherozoids art' discharged, and which subse- 

 quently grow upward, forming terminal simple appendages of irregular 

 length. 



Monoicomyces Homalotae nov, Bp. 



Receptacle consisting of very small hyaline basal and Bubbasal cells 

 surmounted by a distal portion, very much as in Dimorphomyces, which 

 is blackish brown, the lower cell larger and distally inflated. Fertile 

 branches normally two, when the individual is bilaterally symmetrical, 

 rarely three, consisting of a single cell which hears distally an antheridium 

 from its outer and a peritbecium from its inner angle. Perithecium 

 amber brown slightly asymmetrical, relatively very large, short and 

 -tout, the lower half greatly inflated, generally more so on the miter than 

 the inner side, distally conical, the small tip not distinguished, usually 

 abruptly truncate, the stalk-cell hyaline, narrowing to its base. Anthe- 

 ridium home on a pair of rather short stalk-cells, the basal cells some- 

 what smaller and angular, forming part of the wall around the antheridial 

 cell-, the wall cells somewhat smaller than the basal cells, hut large and 

 distinct, the terminal cells apparent 1\ four in number, later forming stout 

 finger-like upgrowths of unequal length. Spores about 35 X 8 /-. Peri- 

 thecia including basal cells 100-120 X 80-85/*, the Btalk-cell ■ '•'< |o ,,. 

 Antheridia including Btalk-cells (not the terminal projections) 70—80 



85 ft. Sterile part of receptacle about 7<>//. 

 On Homalota putrescens Woll., British Museum, No. 412, Azores. 

 On inferior surface of abdomen. 



