Cerithidea

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Cerithidea

a genus of marine and brackish water operculate (prosobranch) snails that serve as first intermediate hosts of a number of trematodes. Cerithidea cingulata serves as host for heterophyes heterophyes in japan and Southeast Asia; cerithidea scalariformis for cercariae that induce swimmers itch in the southeastern U.S. From Florida to Texas.