144 KupFER: STUDIES ON URNULA AND GEOPYXIS 
tical with Melachroia xanthomela Boud. and, following Schrdter, 
must be called Podophacidium xanthomelan. Its position appears 
to be near Zarzetta in the Pezizaceae. 
3. Urnula Geaster Peck forms a new genus, Chorioactis, dis- 
tinct from Uruxula and from all the other genera mentioned in this 
article. Chorioactis Geaster (Peck) seems to belong near Plectania 
and Sarcoscypha in the Pezizaceae. 
Explanation of Plate 8 
The illustrations were drawn from a magnification about two and one half times the 
reproduction appearing in the plate. ‘ 
Fic. 1. Cross section of Geopyxis carbonaria, < 200. 
Fic. 2, Cross section of Urnula Craterium, >< 200.. 
Fic. 3. Cross section of Podophacidium xanthomelan, >< 200. 
Fic. 4. Cross section of Chortoactis Geaster, & 35. 
i] 
