- epilobous
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adj. [Gr. epi, upon; L. lobus, a rounded projection](ANNELIDA: Oligochaeta)A prostomium that is continued by a tongue into the peristomium but without reaching the division between segments 1 and 2.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.