1914] THAXTER— FUNGUS-PARASITES 241 



can be successful in the absence of some contrivance to insure 

 adherence to a moving host. The cells of the lower tiers of the 

 spore, though more prominent than the smaller ones of the middle 

 region, are distinctly flattened, and the minute apical projection, 

 when present, can only be distinguished along the margin. 



The genus is perhaps too near Sporidesmium, and I have had 

 some hesitation in separating it under a new name. The differ- 

 entiation of its spores, however, into specialized distal, basal, and 

 middle regions, of which the last is probably the functional portion, 

 corresponds in a general way to that seen in the spores of the follow- 

 ing genus, and, taken in connection with its entomogenous habit, 

 may perhaps be considered as sufficient reason for regarding it as 

 distinct. It seems not improbable that the sporiferous pustule arises 

 from the multiole germination of the Daler mid-resrion of the suore. 



must 



Muiaria, no v. gen. 



more 



ing in dense, more or less isolated tufts, or rarely repent, each tuft 

 attached by a blackened base in which the vegetative hyphae may 

 be indistinguishable; the tufts consisting of fertile, or both sterile 



elements 



sim 



clearly distinguished from the sporophores; the latter bearing 

 terminally solitary spores which are not abjointed, or, as a rule, 

 clearly differentiated from them. Spores at first transversely 

 septate, consisting of a slender terminal portion and a broader 



main 



become several times longitudinally divided, after usually dividing 

 once transversely; the cells adjacent to these four central tiers 

 often showing occasional longitudinal or slightly oblique divisions ; 

 the stalk and distal prolongation sometimes producing a short but 

 characteristic spurlike process. 



This genus, w r hich inhabits living flies in the tropics, so closely 

 resembles certain types of Macros porium that, as in the case of 

 Muiogone, I have hesitated to give it a new name. It seems, 

 however, to possess certain peculiarities, in addition to its very 

 different habit of life, which are sufficiently distinctive to render 



