4 NEW SPECIES OF THE FAMILY DESMODORIDAE (NEMATODA, DESMODOROIDEA) FROM KENYA

Chromaspirina vanreuselae sp. n., Zalonema myrianae sp. n., Echinodesm odora moensi sp. n., and Metachromadora (Bradylainus) nyalii sp. n. ar e described from coarse coral sands in the intertidal zone of beaches along the Kenyan coast. In Chromaspirina vanreuselae sp. n., 15 cheilo rhabdia (instead of 12 which is typical for the Chromadorina) are foun d in the cheilostome. Zalonema Cobb, 1920, is restored to the genus le vel. Comments are given on the term 'head region', and on ontogenetic transformations of some morphological characters, such as amphidial sh ape, presence, number and position of subcephalic setae, and tail shap e. (C) 1996 The Norwegian Academy of Science and Letters.