田螺沟蜷，软体动物门-腹足纲-中腹足目-厚唇螺科。Head and foot black . Snout cylindrical, anterior margin flat. Length of tentacle sequal with snout length (in preserv ed specime ns). Ocular peduncles short, flat, located at outer bases of each tentacle. Columellar muscl e thick, the length about 2.5 times snout length.