The animals described in this paper were collected in the fall and winter 1969 during ecological investigations of the nematode fauna in a fine sand flat at Wrightsville Beach, north of Wilmington, North Carolina. This is also the type locality of the new species. All nematodes described are from samples taken at various depths in the sediment at about the midtide level. Although a number of species, especially those inhabiting the superficial layer and the more abundant species, have previously been described (COBB 1917, 1920; CHITWOOD 1936a, b; TIMM1 952; HOPPER19 61a, b; WIESER & HOPPER1 966,1967),a great number of
species, especially from deeper sediment layers, appear to be new to science. This paper is by no means a complete account of all the new species encountered. The selection of these particular animals is based either on their importance as a part of the nematode fauna or on the systematic or morphological interest they deserve.
