PLATE XXIV. 



Stichotricha aculeata, x 600, 

 Euplotes charon, dorsal view, x 600, 

 Eiiplotes patella, ventral view, x 420, 

 Euplotes carinata, ventral view, x 650, 

 Aspidisca costata, dorsal view, x 1400, 

 Aspidisca costata, ventral view, x 1400, 



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