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University of California Publications in Zoology [Vol.20 



SYSTEMATIC POSITION OF GENUS AND SPECIES 



Claparede and Laclimann (1858) removed Bursaria entozoiin from 

 the genus in which it had been placed by Ehrenberg (1838) and 

 created for it the new genus Balantid'ium. This genus was of the 

 famil.v Bursaridae and the order Heterotricha. The twenty-two species 

 of the genus that have been described to date are listed below. 



KNOWN SPECIES OF THE GENUS BALANTIDIUM 



Species 

 Balantidium entozoon 



Balantidium coli 



Balantidium duodeni 

 Balantidium elongatum 



Balantidium medusarum 

 Balantidium amphictenides 



Balantidium gyrans 



Balantidium ^aride 

 Balantidium minutum 

 Balantidium giganteum 

 Balantidium helenae 



Balantidium gracile 



Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 

 Balantidium 



I'otundum 



faleiformis 



ovale 



hyalinum 



littorinae 



testudinis 



hydrae 



pisoicola 



caviae 



orehestia 



Original description h 

 Ehrenberg, 1838 



Malmsten, 1857 



Stein, 1862 

 Stein, 1862 



Mereschkowsky, 1879 



Entz, Sr., 1888 



Kellicott, 1889 

 Willaeh, 1893 

 Schaudinn, 1899 

 Bezzenberger, 1903 

 Bezzenberger, 1903 



Bezzenberger, 1903 



Bezzenberger, 1903 

 Walker, 1909 

 Dobell, 1910 

 Dobell, 1910 

 Chagas, 1911 

 Chagas, 1911 

 Entz, Jr., 1913 

 Entz, Jr., 1913 

 Neiva et al., 1914 

 Watson, 1916 



Rana esculenta 

 Rana temporaria 

 Sus scrota 

 Homo sapiens 

 Bana esculenta 

 Triton cristatus 

 Triton alpestris 

 Triton marmoratus 

 Rana esculenta 

 Bana temporaria 

 Bougainvillea, Obelia, 

 Eucope, Broda sp. ? 

 Amphietenis, 

 Turbellaria marina 

 Aquatic worm 

 Columba sp. t 

 Homo sapiens 

 Bana esculenta 

 Bana cyanophlyctis 

 Rana tigriua 

 Bana limnocharis 

 Bana hexadaetyla 

 Bana cyanophlyctis 

 Rana hexadaetyla 

 Rana esculenta 

 Rana palustris 

 Rana tigrina 

 Rana tigrina 

 Littorina 

 Testudo graeea 

 Hydra olygactis 

 Piareetus braehypomus 

 Cavia aperea 

 Orchestia agilis 

 Talorchestia lougicoruis 



