Bütschlia

…of various animals; the genus Bütschlia, for example, lives in cattle. Free-living genera that feed on animal matter often have stiff rods (known as nematodesmata, sometimes called trichites) embedded in the gullet wall; the plant feeders (e.g., Chilodonella) have trichites fused into pharyngeal baskets. The genus Didinium, a predator of…