Conjugation of paramecium multimicronucleata, powers and mitchell

Microscopic examination of both living and stained forms indicates that the so‐called ‘multivacuolate’ and ‘amicronucleate races of Paramecium caudatum’ belong to the species Paramecium multimicronucleata. The published accounts of the morphology and cultural characteristics of the various forms are compared and provide additional evidence. A more complete description is given, including distinctive characters previously omitted.