1893.] NATURAL SCIENCES OF PHILADELPHIA. 143* 



Diaporthe spicata E. & E. 



On dead limbs of Acer spicatum, London, Canada. April, 1892, 

 (Dearness, No. 1,784.) 



Perithecia few in a pustule (4-8), small (250-300//), black, 

 buried in tbe bark and not penetrating the wood. Ostiola short- 

 cylindrical or conic-cylindrical, raising the epidermis into little 

 pustules aud rupturing or piercing it, but mostly remaining partly 

 covered by it. Asci oblong-fusoid, p. sp. 40 x 7/a. Sporidia biseri- 

 ate, oblong or fusoid-oblong, slightly curved, subacute, about 4- 

 nucleate, becoming 1-septate, hyaline, 12-13 x 3-3j//. 



Differ? from D. acerina (Pk.) in its smaller perithecia not sunk in 

 the wood, and its curved sporidia. 



Eutypella coryli E. & E. 



On dead Corylus, London, Canada. June, 1892. (Dearness, No. 

 1,872.) 



Perithecia 8-15 in a pustule, globose, coriaceous, about 1 mm. 

 diam., circinately buried in the unchanged substance of the inner 

 bark, their 4-cleft ostiola erumpent in a convex, black disk 1-2 mm. 

 diam., which is soon obliterated. Asci clavate, 20-30. x 4//., 8-spored. 

 Sporidia biseriate, allantoid, yellowish, moderately curved, 5-6 x 

 li p.. 



The tufts of erumpent ostiola are distinctly prominent. This seems 

 quite distinct from any of the other described species on Corylus. 



Fenestella ulmicola E. & E. 



On dead limbs of Vlm/us americana, London, Canada. August, 

 1892. (J. Dearness.) 



Stroma orbicular, convex, about * cm. diam., closely covered by 

 the epidermis, which is raised into a broad pustule pierced by the 

 minute, black disk but not laciniately torn. Perithecia 6-12, circul- 

 ate in the dull yellowish, light colored substance of the stroma, J-f 

 mm. diam., ovate-globose, their necks converging and their conic- 

 papilliform or convex, black ostiola erumpent and united in the 

 small disk, which rises slightly above the epidermis. Asci cylindri- 

 cal, short-stipitate, paraph y sate ; 110-120x12/*. Sporidia uni- 

 seriate, obloug-elliptical, 5-septate, with a longitudinal septum run- 

 ning through, brown, 12-16 x 7-8/j. 



The substance of the stroma is similar to that of F. vedita, but the 

 asci and sporidia are smaller. 



