Two New Species of Free-living Marine Nematodes (Nematoda: Axonolaimidae and Tripyloididae) from the Coast of Antarctica

Two new species of free-living marine nematodes, Odontophora odontophoroides sp. nov. and Parabathylaimus jare nov., are described from the coastal sand Langhovde, Lützow-Holm Bay, Dronning Maud Land, Antarctica. is only in Bütschli, 1874 that has bicuspidate odontia. similar to Odontophoroides Boucher Helléouët, 1977 Synodontium Cobb, 1920 having odontia, but differs a didelphic reproductive system females. congeners unjointed inner labial cephalic sensilla, outer sensilla three-jointed males two-jointed females, position amphids, shorter spicules, conical tail without long subterminal setae. Modified generic diagnoses keys included for De Coninck Schuurmans Stekhoven, 1933. A combination, arthropappus (Wieser Hopper, 1967) comb. established.