LEÓN RÈGNGN, V., G. PÉREZ-PONCE de LEÓN, and L. GARCÍA-PREITO. Description of Heteroplectanum oliveri sp. n. (Monogenea: Diplectanidae) and comments on the helminth fauna of Kyphosus elegans (Perciformes: Kyphosidae) from Chamela Bay, México.......................................................................................................................9
G. K. WEDDLE and D. K. CONE. Gyrodactylus rafinesqueii sp. n. (Monogenea) from Etheostoma rafinesquei (Percidae) in Kentucky, with a review of the taxonomy and host specificity of species of Gyrodactylus from etheostomatid fishes in North America........................................................................................................................17
KRITSKY, D. C., W. A. BOEGER, and M. JÉGU. Neotropical monogenoidea. 29. Ancyrocephalinae (Dactylogyridae) of piranha and their relatives (Teleostei, Serrasalmidae) from Brazil: species of Amphithecium Boeger and Kritsky, 1988, Heterothecium gen. n. and Pithanothecium gen. n..........................................................................25
BURSEY, C. R., C. T. McALLISTER, and P. S. FREED. Oochoristica jonnesi sp. n. (Cyclophyllidea: Linstowiidae) from the house gecko, Hemidactylus mabouia (Sauria: Gekkonidae), from Cameroon..........................................................................................................................................................................55
ENDO, B. Y., U. ZUNKE, and W. P. WERGIN. Ultrastructure of the lesion nematode, Pratylenchus penetrans (Nemata: Pratylenchidae)...............................................................................................................................................59
ROSINSKI, J. L., P. M. MUZZALL, and R. C. HAAS. Nematodes of yellow perch fromn Saginaw Bay, Lake Huron with emphasis on Eustrongylides tubifex (Dioctophymatidae) and Philometra cylindracea (Philometridae).......96
JOY, J. E. and C. A. BUNTEN. Cosmocercoides variabilis (Nematoda: Cosmocercoidea) populations in the eastern American toad, Bufo a. americanus (Salienta: Bufonidae), from western West Virginia....................102
TORRES, J., C. FELIU, and J. MIQUEL. Vigisospirura potekhina hugoti n. subsp. (Nematoda: Spirocercidae) from Meles meles (Carnivora: Mustelidae) in Spain.........................................................................................................106
KRECEK, R. C., V. A. KHARCHENKO, G. M. DVOJNOS, F. S. MALAN, and T. E. KRECK. Triodontophorus burchelli sp. n. and Triodontophorus hartmannae sp. n. (Nematoda: Strongylidae) from the Burchell's, Hartmann's and Cape mountain zebras in Southern Africa.................................................................................................................113
LICHTENFELS, J. R., V. A. KHARCHENKO, C. SOMMER, and M. ITO. Key characters for the microscopical identification of Cylicocyclus nassatus and Cylicocyclus ashworthi (Nematoda: Cyathostominae) of the horse, Equus caballus..........................................................................................................................................................................120
NEUHAUS, B., J. BRESCIANI, C. M. CHRISTENSEN, and C. SOMMER. Morphological variation of the corona radiata in Oesophagostomum dentatum, O. quadrispinulatum, and O. radiatum (Nematoda: Strongyloidea)..............128
LAMM, M. G., M. E. ROELKE, E. C. GREINER, and C. K. STEIBLE. Microfilariae in the free-ranging Florida panther (Felis concolor coryi)...................................................................................................................................................137
D. F. McALPINE. Fessisentis acutulus (Van Cleave, 1931) comb. n. (Acanthocephala: Fessisentidae): a parasite of caudate amphibians in North America, with comments on the single North American report of A. ranae (Schrank, 1788)................................................................................................................................................................142
WANDURSKA-NOWAK, E., K. BOCZON and E. HADAS. Searching for enzymatic targets of antiparasitic drugs in Trichinella spiralis larvae.............................................................................................................................................148
SCHMIDT, K. A. and B. FRIED. Prevalence of larval trematodes in Helisoma trivolvis (Gastropoda) from a farm pond in Northampton County, PA with special emphasis on Echinostoma trivolvis (Trematoda) cercariae.157