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ONCOMELANIA
A medically significantgenus of amphibious freshwater operculate snails of the family Hydrobiidae (subfamily Hydrobiinae; subclass Prosobranchiata). In the Orient, different subspecies of Oncomelania hupensis serve as intermediate hosts of the orientalblood fluke, Schistosoma japonicum.
Origin: onco-+ G. Melas (melan-), black