1914] THAXTER— FUNGUS-PARASITES 239 



a type like the present should be able to establish itself successfully. 

 It is possible that an examination of fresh specimens might show 

 the presence of some more or less viscous secretion from the hyphae, 

 which enables them to adhere readily and firmly to any surface 

 with which they may come in contact, but there seems to be no 

 indication that such is the case in the alcoholic material. 



It may here be mentioned that several other imperfect forms 

 have been seen on ants. Among them one has been found by the 

 writer in the vicinity of Cambridge, which forms blackish incrusta- 

 tions on various parts of the host and gives rise to a few short, 

 colorless, erect branches. It has not been possible, however, to 

 determine the nature of this plant. Another form has recently 

 been mentioned by Dr. Bischoff (Berl. Ent. Zeitschr. 57 1(2), 

 19 1 2), as occurring on living ants at Potsdam, which possesses 

 brown hyphae and grows on various parts of the host in tufts. 

 No further details as to its structure are given, and it is uncertain 

 whether it is related to the present form. 



Muiogone, nov. gen. 



Entomophilous; pulvinate. Sporophores short, simple, hya- 

 line, crowded. Spores terminal, solitary, dark, muriform, the 

 cells of the mid-region distinguished from those of the basal and 

 terminal portions, which bear more or less conspicuous median 

 processes or spines. 



Muiogone Chromopteri, nov. sp.— Plate XVI, figs. 1-3 



Sporophores short, slender, several-septate, crowded so that 

 the spores form a compact spreading pulvinate mass on the surface 

 of the host. Spores irregularly oblong or piriform, usually broader 

 distally and tapering slightly at the base; the cells very 

 and arranged in about twelve tiers which are regular, except 



numerous 



distally; 



middle tiers remaining subhj 

 brownish yellow; contrasting 



brown 



terminal 



form 



sort of cap; all of them, especially the upper which are slightly 

 irregular, usually slightly flattened distally, and bearing a spine- 



