Three new species of free-living nematodes from the Bohai Sea, China

Three new species of free-living marine nematode, Setosabatieria jingjingae sp. nov., Amphimonhystera circula sp. nov. and Belbolla zhangi sp. nov., f rom the Bohai Sea, China, are described and illustrated. Setosabatieria jin gjingae can be separated from the other two species in the genus by the num ber of amphid turns, the structure of the spicules and the number of pre-cl oacal supplements. A pictorial key and tabular information are provided to facilitate species identification in this genus. Amphimonhystera circula is characterized by circular amphids, a simple gubernaculum and the shape of the tail. Belbolla zhangi is characterized by the number of oesophageal bul bs, the shape of the spicules and gubernacular apophysis, and the size of t he two pre-cloacal supplements. The types are deposited in the Natural Hist ory Museum (London).