PARASITES OF PROTOZOA 1095 



the worms use openings in the ectosarc or, in undamaged animals, the 

 excretion pore. They are then found wholly or partly in the canal system, 

 whose walls they at times break through. Myers ( 1938) found nematode 

 worms in the foraminiferan Rotalia turhinata in an incidence, in the 

 colder months of the year, of 5 percent. 



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