Annelida Lamarck, 1809 - segmented worms Class Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata Order Opisthopora Family Octochaetidae Michaelsen, 1900 Genus [Pellogaster] Gates, 1939 Pellogaster bengalensis (Michaelsen, 1910)