4o6 Natural History Bulletin. 



N. VERNicosA E. & E. n. sp. 



Stroma effused, thin, rather less than i mm. thick, oblong 

 or elliptical, 2 cm. or more long, margin broadly sterile, 

 smooth and shining black. Perithecia monostichous, short- 

 ovate, Yi-Yz mm. dia., entirely immersed, and occup3ang the 

 central part of the stroma; ostiola papilliform, surrounded by 

 an annular depression as in Hy^oxyJon anmilatuni. 



The surface of the stroma over the part occupied by the 

 perithecia is without luster. 



In the specimens examined the asci and sporidia had en- 

 tirely disappeared but the species seems so well marked oth- 

 wise, that we have ventured to give it a name. 



On thin bark of a small dead limb, Castillo Viejo. (C. L. S.) 



N. RUFA E. d' E. n. sp. 



Effused, thin, i mm. or less in thickness, somewhat irregu- 

 lar in outline, }4-2 cm. across, or interruptedly sub-confluent, 

 reddish-brown, at first very thin and entirel}'- sterile with an 

 even surface, then somewhat roughened in the center by the 

 slightly projecting apices of the perithecia with their minute, 

 black, conic-papilliform ostiola. Perithecia about ^ mm. dia., 

 sub-globose. Asci cylindrical, 60-70x3/^, 8-spored. Sporidia 

 uniseriate, navicular-oblong, pale brown, ^}^-^j4x2-2}4 f^. 



Differs from JV. hyfo^hlosa (B. & R.), in its color, its slightly 

 prominent perithecia and smaller, paler sporidia; and the sub- 

 jacent wood and bark are blackened but not stained yellow or 

 olive as in that species. 



On bark, Ometepe. (C. L. S.) 



Hypoxylon coccineum Bull. 



On bark, Ometepe. (B. S. «& C. L. S.) 



H. annul ATUM [Schzu.) Mont. 



On bark, Ometepe. (B. S.) Also the variety depressa Fr.,, 

 was collected at Castillo Viejo. (C. L. S.) 



