1066 



PARASITES OF PROTOZOA 



Our amoeba . Korotneff (1880), encountering an amoeba with similar 

 posterior prolongations, created for it a new genus, Longicauda. Penard 

 (1902), as others had already suggested, considered filaments on 

 Amoeba nobilh to be parasites, and reported observation of appendages 

 of different types on A. pyoteus and A. vespertilw. He noted long, fine 

 filaments also on Pelomyxa tertia. He recounted these observations again 

 later ( 1905c) , and stated that the fungi probably belong very close to the 



Figure 221. Filamentous fungi {Amoebophilus) parasitic on Amoeba proteus {Oura- 

 moebct vorax Leidy). (After Leidy, 1879.) 



Entomophthorales or Saprolegniales, resembling in the former group 

 Empusa, in the latter Leptomitus lacteus. Dangeard (1910) studied 

 filaments on Pelomyxa vorax, and named them Amoebophilus penardt. 

 He gave the name Amoebophilus caudatus to the parasite described by 

 Penard on Amoeba nobilis; and A. korotnejji to that of "Longicauda 

 amoebina." He thought it possible that they might belong to the Asco- 

 mycetes. Geitler (1937) studied in A. proteus what is apparently the 

 same as Penard's parasite {Amoebophilus caudatus Dangeard), but he 

 made no reference to Dangeard 's account. Geitler stated that the fungus 

 probably belongs in the Cladochytriaceae of the Chytridiales. 



