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Sthenelais simplex  Ehlers, 1887 was described from the Gulf of Mexico, but it is currently regarded as a junior synonym of  Leanira incisa  (Grube, 1877) described from the Congo. The latter is now included in  Ehlersileanira  Pettibone, 1970 as its type species. However, the redescription of  L. incisa  was based on specimens from several distant localities, including the type material of  S. simplex . Through the revision of material from the University of Miami Deep-Sea Expeditions along the tropical Atlantic, including the Gulf of Guinea, specimens corresponding to  S. simplex  and  E. incisa  were found and carefully studied. The main results include the restriction of  E. incisa  and the reinstatement of  S. simplex  as a different species under the name  E. simplex  (Ehlers, 1887) comb. nov., reinst.  Ehlersileanira simplex  differs from  E. incisa  by having large auricles, as long as the median antennal ceratophore; median antenna with ceratophore and style of similar length; rectangular elytra in segment 4; branchiae beginning at segment 16; ctenidial pads beginning at segment 9; and tubular segmental papillae beginning at about segment 20. A key to all the species of  Ehlersileanira  is also included.

journal of natural history

Reinstatement of  Ehlersileanira simplex  (Ehlers, 1887) comb. nov. reinst., distinct from  E. incisa  (Grube, 1877) (Annelida: Sigalionidae), with a key to all the species of  Ehlersileanira