The Haplosporidium spp.were characterized by oval spores possessing an operculum covering the orifice,which gave the spore a slightly flattened look on one end when observed under a light microscope.They were described as being a group of parasitic protists that form uni-nucleated spores without polar capsules or polar filaments.Presently,there are fifteen named Haplosporidium species found in freshwater oligochaetes and molluscs and in marine molluscs,crustacea,urochor-dates,echinoderms,and polychaetes.The present paper is the first report of its new member Haplosporidium babyloniae oc-currin...
