134 Ciiicitttiati Society of Nahnal History. 



the species, the tubules are simply the peculiar threads of a 

 capillitium. If, however, the aethalium is a compound plas- 

 modiocarp, the tubules stand for the original plasmodial 

 strands and, consequently, represent the component spor- 

 angia. 



1. IvYCOGALA CONICUM. Pers. ^thalia small, ovoid-conic, 

 gregarious, sometimes close together with the bases confluent, 

 the surface pale umber or olivaceous marked with short brown 

 lines, regularly dehiscent at the apex. The wall thin ; the 

 outer layer not continuous, the irregular brown vesicles di.s- 

 posed in angular patches and elongated bands, which have a 

 somewhat reticulate arrangement. The tubules appear as a 

 thin stratum upon the inner membrane ; they do not branch, 

 and they send long slender simple extremities inward among 

 the spores. Spores in mass pale ochraceous, globose, min- 

 utely warted, 5-6 mic. in diameter. vSee Plate III, Fig. 5. 



Growing on old wood, ^thalium 2-5 mm. in height, the 

 tubules 3-8 mic. in thickness. This is Dermodium conicnm of 

 Rostafinski's monograph, but the structure is essentiall}- the 

 same as in the other species. Massee evidently did not have 

 specimens of this species. I have never seen any branching 

 of the tubules either in the wall or in the free extremities of 

 the interior. 



2. Lycogala exiguum, Morg. n. sp. yEthalia small, glo- 

 bose, gregarious, the surface dark brown or blackish, min- 

 utely scaly, irregularly dehiscent. The wall thin ; the vesi- 

 cles with a dark polygonal outline, disposed in thin irregular 

 reticulate patches, which are more or less confluent. The 

 tubules appear as an interwoven fibrous stratum upon the 

 inner membrane ; they .send long slender branched extrem- 

 ities inward among the spores. Spores in mass pale ochra- 

 ceous, globose, nearly smooth, 5-6 mic. in diameter. See 

 Plate III, Fig. 6. 



Growing on old wood, ^thalium 2-5 mm. in diameter, the 

 threads 2-10 mic. in thickness, with very slight thickenings 

 of the membrane. The polygonal vesicles give a reticulate 

 appearance to the dark-brown patches which ornament the 

 surface of the wall. 



3. IvYCOGALa Hi'iDKNDKiM, Buxb. ..^tlialia sub-globose, 



