TY - RPRT TI - Scyphidia tholiformis, a peritrichous protozoan found on the gills and external surfaces of Micropterus dolomieu and Micropterus salmoides AU - E. W. Surber PY - 1942 DO - 10.1577/1548-8659(1942)72[197:stappf]2.0.co;2 UR - https://pubs.usgs.gov/publication/1014315 ID - 1014315 ER -