- A genus of nemertean worms, parasitic inside gill hole of clams as well as other bivalves. They will have a large posterior sucker, like that of a leech. See Illust. of bdellomorpha.
- A genus of worms, previously allowed to be leeches, today considered to be parasitic nemerteans, kind of a family group Malacobdellidæ. M. grossa is a parasite based in the gills of varied mollusks.
Variant for "malacobdella"
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