4IO Natural History Bulletin. 



Kr. pusilla E. & E. n. sp. 



Stroma clavale, stipitate. Head depressed-spherical, brown- 

 ish-black, mostly not over 2 mm. dia.; stipe slender, 3-4 mm. 

 long and about i mm. thick, branching from near the base 

 two to four together. Perithecia entirely buried, sub-globose, 

 about ^ mm. dia., 8-12 in a stroma; ostiola minutely papilli- 

 form. The asci in the specimens examined had disappeared. 

 Sporidia navicular-fusoid, opake, 20-22x6/*. 



Differs from K. clavus Fr., in its diminutive size and more 

 numerous perithecia. 



On fallen tree trunks, Castillo Viejo. (C. L. S.) 



PORONIA HELISCUS Mout. 



Cespitose, small, wedge-shaped, corky, more or less scaly 

 or scabrous, black, white within, with a placentiform disk. 

 Perithecia globose, immersed, coUiculose; ostiolum a Httle 

 prominent, umbonate. Sporidia apparently i-seried, navicular- 

 pyriform, 7>^-iO// long, black-fuliginous. 



On trunks of dead trees, Cayenne (Leprieur). Montagne de- 

 scribes the sporidia as bilocular, but Currey figures them, from 

 the original specimens, as continuous. [Sacc. Syll. I, p. 349.] 



On bark of tree trunks, Ometepe and Castillo Viejo. (C.L.S) 



P. turbinata E. cC- E. n. sp. 



Stromata gregarious, or sub-cespitose, carnose-coriaceous, 

 top-shaped, about 3 mm. broad and high, black outside, white 

 within, convex above and slightly roughened by the papilli- 

 form ostiola, immarginate, sub-discoid, abruptly contracted 

 below into a short, sub-compressed stipe. Perithecia periph- 

 erical, monostichous, globose, )^-^ mm. dia., -buried in the 

 stroma, with the apex scarcely prominent, about 20 or 25 in a 

 stroma. Asci clavate-cylindrical, 75x6-7//, swollen at the 

 apex, paraphyses none, 8-spored. Sporidia uniseriate, navicu- 

 lar-oblong, 2-nucleate, hyaline at first, then olivaceous and 

 finally opake, 12-14x5-6/*. 



The stroma is sub-plicate below and easily breaks away 

 from the bark. Sphceria intermedia^ Schw., Syn. N. A. 1166, 



