Biol. Bull.
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Biol Bull 50: 444-454. (June 1926)
© 1926 Marine Biological Laboratory
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ENDAMOEligBA CITELLI SP. NOV. FROM THE STRIPED GROUND SQUIRREL CITELLUS TRIDECEMLINEATUS, AND THE LIFE-HISTORY OF ITS PARASITE, SPHÆRITA ENDAMOEligBÆ SP. NOV

ELERY RONALD BECKER 1

1 IOWA STATE COLLEGE

1. Endamoeligba citelli sp. nov. is a commensal in the coeligcum of the striped ground squirrel, Citellus tridecemlineatus.

2. The nucleus of the free form is typical of the genus Endamoeligba.

3. The cyst is characterized by a nuclear structure somewhat different from that known for other amoeligbæ, and an unusually thick cyst wall with a yellowish refraction.

4. The cytoplasm of this amoeligba may contain a cytridine parasite, Sphærita endamoeligbæ sp. nov.

5. The developmental cycle of this cytozoic parasite was followed from the free bacterium-like infective stage to the spore liberated from the sporangium inside the cytoplasm of the amoeligba.

6. Sphærita endamoeligbæ, like other members of the genus, produces degenerative changes in the protoplasm of its host, particularly in the nucleus.






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