26 Cincinnati Society of Natiiyal History. 



Growing on old wood of Oak, etc. Sporangium with the 

 stipe .8-1.5 nim. in height, the stipe very short, not exceeding 

 the diameter of the sporangium. A small species, distin- 

 guished by its golden-yellow spores and capillitium. 



6. Hemiarcyria funali.s, Morgan n. sp. Sporangium 

 obovoid to turbinate, 3'ellow or olive yellow, polished stipitate ; 

 the wall firm, thickened on the inner surface by an olivaceous 

 layer, breaking away from above downward, leaving an irreg- 

 ular cup-shaped base. Stipe short, reddish-brown to blackish, 

 arising from a thin hypothallus. Capillitium of threads 6-8 

 mic. in thickness, yellowish-ochre or dull ochre in color, 

 simple or remotely branched ; the free extremities obtuse or 

 swollen ; the spiral ridges four or five, minutely warted. 

 Spores in mass yellow, globose, minutely warted, 8-9 mic. in 

 diameter. See Plate I, Fig. 20. 



Growing on old wood. Sporangium 1.5-2.5 mm. in height, 

 the stipe variable, but usually much shorter than the sporan- 

 gium. Scarcely to be distinguished from Hemiarcyria ablata, 

 except by the threads of the capillitium. 



7. Hemiarcyria ruhifokmis, Pers. Sporangium obovoid 

 or turbinate to cylindric, usually few to many fa.sciculate upon 

 the united stipes, sometimes sessile, brown-red to brown or 

 blackish in color, smooth and often shining with a metallic 

 luster ; the wall much thickened by a dense brownish-red 

 layer of minute granules, at maturity the apex torn away, 

 leaving much the greater part persistent. Capillitium of 

 slender threads, 4-6 mic. in thickness, brownish-red in color, 

 very rarely branched ; the free extremities usually terminated 

 by a stout spine ; the spiral ridges three or four, furnished 

 with numerous spinules. Spores in mass, browni.sh-red, 

 globose, minutel}' warted, 9-1 1 mic. in diameter. 



Growing on old wood ; one of the commonest of the 

 Mj'xomycetes. The fascicle 3-4 mm. in height, the individual 

 sporangia .5-. 6 mm. in diameter. 



8. Hemiarcyri.v skkpula. Scop. Plasmodiocarp terete, 

 flexuous, usuall}' branching and anastomosing to form an 

 extensive network, from tawny to golden-yellow^ in color; 

 the wall thin above and yellow, breaking open irregularly and 

 falling away down to the brownish thicker adherent base. 



