Species name： Spirostomum sp.
Bureau Swerage Tokyo Metropolitan Government
The size of Epistylis is 150-400 μm in length and 20-50 μm in wide. Some species size are more than 3 millimeters. The body is a long cylinder-shaped and its color is yellow or brown. The peristome is occupying about 1/3 body length from front end of the body. It have myoneme in the body. They move with gliding, and sometimes swim with shrinking spiral.
(2016.11.08)