
Didinium is a genus of unicellular ciliate protists with at least ten accepted species. All are free-living carnivores. Most are found in fresh and brackish water, but three marine species are known. Their diet consists largely of Paramecium, although they will also attack and consume other ciliates. Some species, such as D. gargantua, also feed o...
Found on
http://en.wikipedia.org/wiki/Didinium

(from the article `gymnostome`) ...stiff rods (known as nematodesmata, sometimes called trichites) embedded in the gullet wall; the plant feeders (e.g., Chilodonella) have trichites ...
Found on
http://www.britannica.com/eb/a-z/d/46
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