Colpoda (col-poe-da) is arguably the most common of all soil ciliates. Comma-shaped, flattened, cilia all over body. Cilia usually in pairs. Depression of body leads to the mouth region where there are lines of oral cilia. these cilia may clump together and are longer than the cilia of the rest of the body - as this micrograph illustrates. Usually eats bacteria. Can form cysts which resist drying up. Phase contrast.