414 PROCEEDINGS OP THE AMERICAN ACADEMY. 



<3.5/i. Perithecia 100-120 X W-48/a. The stalk 84-50 > 25-27 

 /-. Appendages of fertile branch 50-90 • •"»//. St. -rile part of recep- 

 tacle50 ."»»»„. Greatest length to tip of perithecium 250-435 u. 



( )n Oxytelus alutaceifrons Wbll., British BIu d, No. 111. Island of 



St. Helena. <>n abdomen and elytra. 



Monoiconiyces invisibilis dot. sp. 



Hyaline. Basal cell of receptacle small subtriangular, the Bubl 

 coll rather long ami narrow, bearing terminally a distally rounded cell 

 from which it is separated by an oblique Beptumand which is surmoui 

 by a short Bimple cylindrical appendage ; the fertile branch developed on 

 one side only i not distinguished from the receptacle and its append 

 consisting of two or three obliquely superposed cells extending obliqui ly 

 upward in :i divergent series, the terminal cell bearing a perithecium and 

 antheridium in the usual relative positions, the subterminal cell sometii 

 apparently producing a second antheridium instead of the simple appen- 

 dage which terminates the lower cell of the series. Perithecium borne 

 on a rather short stout stalk-cell, its inflated basal half not distinguished 

 from the flattened basal cells, its slender distal half abruptly distinguished. 

 Antheridium apparently similar in general to that of the other species, 

 its detailed structure not recognizable in the types. Perithecia 8 1 X .';<» 

 //. The stalk-cell 20X10/U. Receptacle, sterile part, about 10 /i. 

 Total length to tip of perithecium 110-1 10//. 



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



POLYASCOMYCES nov. genua 



Receptacle consisting of two superposed cells, tin 1 upper bearing a 

 perithecium laterally and an appendage terminally. Appendage consist- 

 ing of a series of superposed flattened cells, surmounted by a dome 

 shaped portion which is not persistent (a compound aiitlieridium ? ). l'eri- 

 thecium with a distinct stalk-cell and well developed basal Cells, the 

 BUpporting cell and the lower wall cells forming a broad base the upper 

 surface of which forms a broad aseigerous area, the asci arising from 

 it numbers of aseigerous cells. 



It has not been possible from the material available to determine the 

 exact nature of the antheridium in this remarkable genus. The terminal 

 dome shaped portion of the appendage appears to consist original!) ol 

 several cells, but whether it constitutes the whole of the antheridium or 

 whether the latter is represented in part or wholly by the curious cells 



