350 PKOCEEDINGS (JF THE ACADEMY OF [1894. 



Spots large (l-'2 era.), orbicular, dirty brown, paler and purple 

 margined above, sometimes ii'regular in shape and occupying the 

 greater part of the leaf. Ascomata araphigenous, but more numer- 

 ous below, superficial on paler parts of the spots, small (2 mm. 

 diara. ), dark liver-color (nearly black when dry), margin nodulose- 

 dentate or subentire, glabrous, concave. Asci clavate-oblong, 45- 

 55 X 10-12,'/, with a short, nodular stipe and filiform, branched 

 paraphyses. Sporidia biseriate, oblong, hyaline, continuous, 10-12 

 X 3-82//., ends obtuse. 



Allied to M. priiticola E. & E., but differs in several respects. 



Tapesia Coloradsnsis E. & E. 



On bark of Sambucus melanocarpa, Cameron Pass, Colorado, July, 

 1894, alt. 10,000 ft. (C. F. Baker, 236, partly). 



Ascomata scattered or subgregarious, sessile, seated on the epider- 

 n)is or on the surface of the inner bark, 1-2 mm. diam., glabrous, 

 nearly black outside, disk glaucous-white, or livid-white at first, 

 becoming nearly black when dry, margin paler, thin and subundu- 

 late. Asci clavate-cylindrical, 45-55 x 8-10//, narrowed below into 

 a short, thick stipe, 8-spored, with stout but evanescent paraphyses. 

 Sporidia biseriate, oblong-cylindrical, smoky-hyaline, often slightly 

 curved, continuous, obtuse, 8-11 x 22-32//. 



The ascomata are surrounded by a thin, brown subiculum (more 

 or less distinct), composed of slender pale brown, sparingly septate, 

 interwoven hyphae. 



Allied to T. fusca (Pers. ). 



When dry the opposite sides of the ascomata roll together in a 

 hysteriform manner. 



Helotiella pygmsea E. & E. 



On old cornstalks, Ohio (Morgan, No. 993). 



Gregai-ious, minute, pallid, yellowish outside, sparingly clothed 

 and margin fringed with pale slender hairs. When moist convex- 

 discoid, \—i mm. diam., pallid; when dry urceolate and yellowish, 

 attached to the matrix by a central point and by light colored hairs. 

 Asci (p. sp. ) about 30 x 6//. (paraphysate?), 8-spored. Sporidia bi- 

 seriate, fusoid-obloug, hyaline, 4-nucleate, becoming uniseptate, and 

 sometimes slightly constricted, 10-14 x 3-32//. 



Differs from H. carnosnla Rehm in its smaller size and absence of 

 any clavate paraphyses. 



