Two new species of the genus de Man, 1890 (Nematoda, Enoplea, Enoplida, Oncholaimidae) from the intertidal zone of the Yellow Sea, China.

Two new species of from the intertidal zone along the Yellow Sea are described and illustrated. is characterized by a heavily cuticularized and relatively shallow buccal cavity with stubby teeth; cephalic setae 7-8 µm long; amphidial fovea invisible; slender spicules almost straight, cephalated proximally and conical distally; and tail conical, straight in males and slightly bent ventrally in females. is characterized by a relatively large amphidial fovea, conico-cylindrical tail with swollen horseshoe-shaped tip, spicules slightly curved ventrally, and 10-12 setae surrounding the cloaca, each 3-4 µm long. The basic morphological data of males of 26 valid species in with a body length of 1-2.9 mm are presented.