TAXONOMIC NOTES ON POLYACANTHORHYNCHUS-KENYENSIS (ACANTHOCEPHALA, POLYACANTHORHYNCHIDAE) FROM LAKE NAIVASHA, KENYA

The original description of Polyacanthorhynchus kenyensis Schmidt and Canaris, 1967 from 2 species of fish in Lake Naivasha, Kenya was prima rily based on measurements of 2 male cystacanths. That description is herein emended based on the availability of a larger number of immatur e worms of both sexes obtained from the freshwater teleosts Orechromis leucostictus, Tilapia zillii (new paratenic host records), and Microp terus salmoides. A secretory function for the apical organ is suggeste d.