260 PROCEEDINGS OF THE AMERICAN ACADEMY. 



The bulbils of the latter are not unlike those of M. anomala in size, 

 color and mode of development. 



The species of "Sphaeria," referred to by Biffen ('02) in connection 

 with Acrospeira mirabilis, also resembles somewhat M. anomala. It 

 differs from the latter, however, in several important respects. The 

 perithecium has no papilla about the ostiole, the ascospores are sym- 

 metrical and the primordium of the bulbil is a spiral. 



Again the mode of development of the perithecium from a spiral 

 primordium resembles somewhat that of Melanospora stysanophora 

 described and figured by Mattirolo (.'86). The mature perithecia 

 however, are different, .1/. stysanophora having a distinct neck. The 

 latter is also said to be associated with a Stysanus-like fructification. 



Melanospora Gibelliana Mattirolo. 



This species was found by Mattirolo on a gross culture of decayed 

 chestnuts in moist sand, and besides melanosporous perithecia and 

 bulbils it also produced chlamydospores and conidia on bottle-shaped 

 sterigmata. 



The perithecium, which develops from a spiral primordium, is 

 somewhat pyriform with a long neck surmounted by terminal setae. 

 The neck, however, is considerably longer than that described for 

 .1/. cervicula. The ascospores are brownish-black and asymmetrical, 

 somewhat similar to those described for the other melanosporous 

 forms. 



The bulbils are said to be nearly spherical, pale yellow to brownish- 

 yellow, and often 100 p. in diameter, with a colorless cortical layer of 

 cells resembling somewhat the appearance of Papulospora coprophila. 

 In its development a short lateral branch divides and forms a number 

 of short secondary branches which intertwine forming an irregular 

 spherical body varying considerably in size. 



This species also is said to have associated with it chlamydospores 

 somewhat resembling Sepedonium, as well as conidia on bottle- 

 shaped sterigmata. 



Melanospora globosa Berl. 



In the same article in which he describes Sphaeroderma bulbilli- 

 ferum C92) Berlese also describes Melanospora globosa which he found 

 growing on small pieces of decaying wood and herbaceous material. 

 The perithecium of this species is, as the name indicates, globose, 

 250-2S0,u in diameter and 360-450 y. (rarely 500 yu) long. The neck 



