Description of Distigma proteus
provided by BioPedia
Body highly metabolic, scarcely ever presenting the same contour, usually more or less elongate, with irregular constrictions and distensions; longer flagellum nearly equaling the body in length, the shorter one scarcely one quarter that length; endoplasm transparent, enclosing numerous dark coloured refringent corpuscles whose positions are constantly shifting from one extremely to the other in accordance with the peristaltic motions of the body; two minute, blackish, eye-like pigment-spots usually developed at the anterior extremity; tubular pharynx slender, greatly prolonged; contractile vacuole conspicuous, located close to the termination of the pharynx; nucleus ovate, subcentral. Length 44-106 microns.
