Turbellaria Soft bodied, flat and non-segmented worms. Gray, brown or black, often molted, striped or spotted. Ventral sides gray. May have two dark eyespots on the dorsal side of the head. Body markings gray and the eye spots white in preserved specimens.
Specimens are fragile and easily destroyed during handling.
Oligochaeta Soft-bodied, many segmented, and elongate. No distinct head region. May have bristles, hairs or gills when viewed under the microscope. Beige to red when alive. Suckers on both ends, on the ventral or bottom side.