164 



MEDICAL MYCOLOGY 



There is also a group of species, regular!}^ with 4 spores per ascus, which 

 was originally described in Endomrfces but which apparently is much more 

 closely related to this group. Practically nothing is known of their cytology 

 and life history. Until more is known, I have thought best to leave them in 

 Zymonema. 



Fig. 33. — Zymonema dermatitidis. (After Moore 1933.) 



In the problematical Bargellinia, from the external auditory conduit, the 

 ascus is thick-walled, and the ascospores are reduced to 1 or 2 per ascus. In 

 Hemispora, the ascus wall is thin and a single echinulate ascospore is produced 

 in each ascus. It seems probable that this group has given rise to the rough- 



