440 PROCEEDINGS OF THE AMERICAN ACADEMY. 



those of the inner producing either secondary axes similar in structure to 

 the primary one, or antheridial brandies; the secondary axes producino- 

 autheridial or sterile branches on both sides, and like the primary ones 

 bearing a single terminal perithecium. The antheridia simple, borne as 

 in Compsomyces, usually several from the distal ends of successive cells. 



Clematomyces Pinophili nov. sp. 



Nearly hyaline or yellowish, the basal and subbasal cells small, the 

 cells of the main axis in six to twelve pairs more or less . alternate on 

 either side, each cell of the outer series giving rise to a three or four 

 celled usually simple generally appressed sterile appendage, the terminal 

 cell of which is often smoky brown, its basal cell almost wholly united to 

 the cell of the axis next above ; the secondary axes one to three in 

 number, usually with a single basal cell, the external branches more often 

 simple and sterile, the inner fertile ; the antheridial appendages of both 

 primary and secondary axes more often simple, sometimes sparingly 

 branched, those near the perithecia bearing the greatest number of an- 

 theridia which may arise singly or opposite in pairs, or in whorls of three 

 or four from the distal (one to four) cells of the appendage. Perithecium 

 solitary, sessile at the tips of the primary and secondary axes, often 

 straight and symmetrical tapering to the truncate unmodified apex, pale 

 becoming amber brown. Spores about 38 X 3 /.i. Perithecia 100-150 

 X 25-40 1«. Sterile appendages, longer, 100X7 fx. Greatest length 

 to tip of perithecium (main axis) 300-400 X 35 fi. 



On Pinoph'ilus sp. indet., British Museum, No. 390, Burmah, India. 

 On inferior surface. 



Sphaleromyces obtusus nov. sp. 



Perithecia relatively large, clear dark brown becoming almost opaque ; 

 the inner margin nearly straight, the outer strongly convex ; tapering 

 very slightly basally and distally ; the tip paler brown, abruptly distin- 

 guished, and when viewed sidewise flaring, with straight divergent lateral 

 margins, the distal margin as broad as the portion of the perithecium 

 below the tip and slightly concave, the outer lips more prominent and 

 much broader than the inner : when viewed at right angles to this posi- 

 tion the tip appears in general bluntly rounded not expanded, the more 

 or less papillate tips of the lip-cells situated in asymmetrical pairs, which 

 are visible above and below a broad bluntly rounded median portion 

 between them : the basal cells colored like the perithecium, distinct, 



