The Enchytraeidae are a microdrile oligochaete family and include both terrestrial species known as potworms that live in highly organic environments and iceworms such as Mesenchytraeus solifugus that live in ice fields. Orders Arhynchobdellida Haplotaxida Rhynchobdellida The Oligochaeta or few-bristled worms (singular Oligochaete, IPA /ˈɒlɪgoʊˌkit/) are well-segmented Annelids, most with a spacious coelom that is used as a hydroskeleton. ... Binomial name Mesenchytraeus solifugus Mesenchytraeus solifugus is a species of Oligochaete worms commonly called ice worms that live in glaciers in North America. ...