224 PROCEEDINGS OF THE ACADEMY OF [1890. 



walls, black and shining inside, contracted above into a short neck 

 terminated by an erumpent subhemispheric-tuberculiform ostiolum 

 more or less distinctly radiate-sulcate. Asci with a slender base, 

 90-100 X 15-20 //. polysporous. Paraphyses obscure. Sporidia 

 biseriate, vermiform, brown, 3-6 septate, 20-26 x 4 //. The cen- 

 tral septum is distinct, the others fainter. Spermogonia ( Cytispor- 

 ina Fraxini) central. Sporules filiform, curved, 40 //. long. Near 

 T merustans, Sacc. 



Cryptovalsa sparsa, E. & E. 



On dead oak limbs, St. Martinsville, La., Feb., 1890. Langlois,. 

 2207. Perithecia mostly only 1-4 in a stroma J mm. diam. buried 

 in the inner bark with only a faint circumscribing line which does 

 not penetrate the wood, with thick coriaceous walls, black and shin- 

 ing inside, attenuated above into short necks terminating in more or 

 less distinctly quadrisulcate ostiola erumpent in a small pustuliform 

 disk but scarcely projecting above it. Asci (p. sp.) 70-75 x 8-10 

 p.. polysporous, with a slender base and accompanied by paraphyses.. 

 Sporidia allantoid, yellowish, moderately curved, with a nucleus in 

 each end, 6-7 x I2 //. 

 Diatrype macounii. 



On maple bark (Ace7- rubrum) ? Agassiz, British Columbia, May, 

 188!). Macoun, No. 127. Stroma discoid, gray, 3-4, mm. across and 

 about one mm. thick, suborbicular or subelliptical, seated on the 

 surface of the inner bark and loosely embraced by the upturned 

 ruptured epidermis, circumscribed by a distinct black line which 

 penetrates the bark and stains the surface of the subjacent 

 wood but does not penetrate it. Perithecia numerous, 30-50, in a 

 single layer, ovate-globose, i-J mm, diam. contracted above into a 

 • short neck terminating in a small, indistinctly radiate-cleft black 

 ostiolum which is in a slight depression of the stroma. Asci (p. sp. 

 20-30 X 3 ,a.) or including the thread-like base, 50-60 //. long. 

 Sporidia biseriate above, allantoid, yellowish, slightly curved 4-6 x 

 f-1 //. Substance of the stroma dirty white inside. 

 Diatrype hochelagae. 



On decorticated elm wood, London, Canada, March, 1890. J. 

 Dearness. Stroma orbicular or elongated, 2-3 mm. long and 1-2 

 mm. wide, often more or less confluent, pulvinate-verrucose with the 

 margin abrupt or slanting off at the ends, with a faint circumscrib- 

 ing black line which does not penetrate deeply into the wood, dull 



