148 Cincinnati Society of Natural History. 



elongated, bent, flexuous and reticulate ; the wall dark-col- 

 ored, with a thin layer of stellate crystals of lime. Columella 

 entirely wanting. Capillitium of very slender threads, extend- 

 ing from base to upper surface, much branched, the branches 

 combined into a dense network ; to these threads adhere 

 numerous roundish vesicles, composed of a brownish mem- 

 brane, inclosing a yellow coloring matter, the vesicles 30-50 

 mic. in diameter. Spores globose, very minutely warted, vio- 

 laceous, 7-8 mic. in diameter. 



Growing on old leaves, bark, etc. The plasmodiocarp .6^.8 

 mm. in thickness and extending from one to several milli- 

 meters in length. This species is reported from the I'nited 

 States by Massee. It ought to be readily recognized by its 

 yellow Plasmodium and the peculiar vesicles adherent to the 

 capillitium. 



II. DiDVMiUM ANELLUS, Morgan, n. sp. Plasmodiocarp in 

 small rings or links, then confluent and elongated, irregularly 

 connected together, bent and flexuous, resting on a thin 

 venulose hypothallus; the wall firm, dark-colored, with a thin 

 layer of stellate crystals of lime, irregularly ruptured. Colu- 

 mella merely a thin layer of brown scales. Capillitium of 

 slender dark-colored threads, which extend from base to wall, 

 more or less branched, and combined into a loose net. Spores 

 globose, very minutely warted, violaceous, 8-g mic. in 

 diameter. Plate XII, Fig. 41. 



Growing on old leaves in woods in Spring. Plasmodiocarp 

 in rings .3-. 5 mm. in diameter, or often more or less elongated 

 into links and chains, which are bent and flexed in quite an 

 irregular manner, the thread or vein composing them about 

 .2 mm. in thickness. A more minute species than Didyviium 

 serpula, without characteristic thickenings upon the threads 

 of the capillitium, and wanting the peculiar large cells of this 

 species. 



II. SPUMARIA, Pers. i^thalium composed of numerous 

 elongated, irregularly -branched sporangia, more or le.ss 

 closely compacted together and confluent, seated upon a well- 

 developed common hypothallus ; the walls of the sporangia 



