Annelida Lamarck, 1809 - segmented worms
   Class Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata
     Order Opisthopora
       Family Megascolecidae Rosa, 1891
         Genus [Amynthas] Kinberg, 1867
           1 Amynthas alexandri Beddard, 1900
           2 Amynthas diffringens (Baird, 1869)
           3 Amynthas hawayanus (Rosa, 1891)
           4 Amynthas heterochaetus (Michaelsen, 1891)