318 THAXTER. 



somewhat asymmetrical, 70-80 X 54-58 /x very rarely 100 X 65 ^t; 

 the wall hyaline or pale yellowish, 4 ^t thick. Hyphae 8-14 ^i, of the 

 usual type, with occasional clearly defined septa; the sporophores 

 characteristically slender, 5-6 ix. 



In Sphagnum, Little Metis, P. Q. E. C. Jeffrey. 



The spore-mass in the material examined, which is all alcoholic, is 

 similar to that of E. radiata. The gleba, however, does not consist of 

 a firm dense matrix in which the spores are firmly held, but is formed 

 of a loose mesh of friable mycelium, of the usual type, in which the 

 spores are free, and are associated with numerous vesicular mostly 

 spherical abortive spores of variable size which eventually shrivel and 

 turn brownish. 



The species is most nearly related to E. fulva, but is distinguished 

 by its decidedly smaller and more regularly ovoid spores, which are 

 borne on characteristically slender sporophores, and separated by a 

 septum. The nearly hyaline wall of the spore is relatively distinctly 

 thicker; the exospore thin, but rather clearly defined. The fatty 

 coarsely granular contents is at first hyaline, becoming brownish. 



Endogone borealis nov. sp. 

 (Figs. 44-45.) 



Spore-mass irregular, coherent, spongy, dark, almost chocolate 

 brown, about seven to eight mm. in greatest diameter. Gleba of 

 loosely woven hyphae, 10-25 /x in diameter, among which much 

 foreign matter and many abortive spores are incorporated. Spores 

 reddish brown, broadly and rather symmetrically elliptical, about 

 125 X 100 M, the larger 145 X 110 ijl: the thick red-brown walls 

 about 8/x: borne on rather slender hyphae and frequently subtended 

 by a septum. 



In Sphagnum, Little Metis, P. Q. E. C. Jeffrey. 



This species seems clearly distinguished by the form and color of its 

 thick-walled spores, the contents of which, in the alcoholic material 

 examined, forms a rather finely granular more or less fibrous proto- 

 plasmic network. It does not seem nearly related to other known 

 species unless it be E. canadensis, from which it is distinguished by the 

 peculiar color and broadly and symmetrically elliptical outline of its 

 large thick-walled spores. The endospore is not continuous when ex- 

 amined under brilliant illumination although the isthmus is a very 

 narrow one and a small septum appears to be present. 



