CESTODA AND ACANTHOCEPHALA OF FISHES FROM CENOTES (EQUALS SINKHOLES) OF YUCATAN, MEXICO

During a study on parasites of fish from cenotes (= sinkholes) in the Yucatan Peninsula, the following cestodes and acanthocephalans were fo und in 581 freshwater fish of 15 species: the cestodes Bothriocephalus acheilognathi Yamaguti, 1934, Bothriocephalus sp. (Bothriocephalidae) , Nomimoscolex sp. (Monticellidae), Proteocephalidea gen. sp. larv., D endrouterina pa pillifera (Fuhrmann, 1908) larv. and D. pilherodiae Ma hon, 1956 larv. (Dilepididae), and the acanthocephalans Ostospiniferoi des chandleri Bullock, 1957, Neoechinorhynchus golvani Salgado-Maldona do, 1978 (Neoechinorhynchidae), Polymorphus (syn. Arhythmorhynchus) br evis (Van Cleave, 1916) larv. (Polymorphidae), and an echinorhynchid l arva. With the exception of B. acheilognathi, all tapeworms are found in Mexico for the first time; second-stage larvae of D. papillifera an d D. pilherodiae from fish are reported for the first time.