1893.] NATURAL SCIENCES OF PHILADELPHIA. 133 



almost exactly like those of Gloninm lineare. The surface of the 

 wood, in those parts occupied by the fungus, is, for the most part, 

 uniformly blackened. 



Lophiosphsera fluviatilis E. & E. 



On decorticated, weather-beaten limbs of (Salix) ? Among drift- 

 wood, near Sheridan, Montana. May, 1892. (Mrs. L. A. Fitch.) 



Perithecia gregarious or scattered ovate-globose or elliptical, about 

 i mm. diam. (i-i), emergent among the loosened fibers of the wood 

 which, when the perithecia are gregarious, is generally blackened 

 on the surface. Ostiola variable, thin, compressed or also sometimes 

 simply papilliform, at length perforated and sometimes partially 

 collapsing. Asci clavate-cylindrieal, 75-80 x 12//, short-stipitate, 

 with abundant paraphyses. Sporidia sub-biseriate, fusoid, hyaline, 

 uniseptate and constricted, mostly swollen on each side of the septum, 

 slightly curved, nucleate, 20-23 x 5-6//. 



Ottilia ostryaegena E. & E. 



On dead limbs of Ostrya virfjinlca, London, Canada. April, 

 1892. (Dearness, No. 1,782.) 



Perithecia erumpent in clusters 1-2 mm. across, surrounded by the 

 ruptured epidermis, J— § mm. diam., globose, black, granular-rough- 

 ened, and finally collapsing. Ostiolum papilliform, at length, per- 

 forated. Asci cyclindrical, 100-120 x 15//, stipitate, p. sp. 90-100// 

 long, paraphysate. Sporidia 8 in an ascus, uniseriate, elliptical or 

 oblong-elliptical, brown, uniseptate and constricted at the septum, 

 20-25x11-13//. 



The clusters of perithecia are larger and more distinctly erumpent 

 than in Otthia eratcegi and the perithecia themselves are white 

 inside. 



Montagnella acerina E. & E. 



On dead limbs of Acer spicatum, near St. Catherine, Ontario, 

 Canada. May, 1892. (Dearness, 1,860.) 



Perithecia subglobose, black, about 1 mm. diam. erumpent-super- 

 ficial in small (1 mm.) but dense clusters, or sometimes in elongated 

 strips one mm. wide and 3-5 mm. long. Ostiola strongly papilliform, 

 at length perforated. Asci cylindrical, p. sp. 60-65 x 6//, with 

 abundant paraphyses, 8-spored. Sporidia uniseriate, oblong-ellip- 

 tical, 3-septate, yellowish or olivaceous hyaline, 10-12 x 4-5//. 



Wallrothiella parvula E. & E. 



On bark of birch roots, London, Canada. April, 1892. (Dear- 

 ness, No. 1,633.) 



