MILLER, DONALD M. AND T.T. DUNGAN. Body Wall Organization of the Acanthocephalan, Macracanthorhynchus hirudinaceus: A Reexamination of the Lacunar system 99
ACHOLONU, ALEXANDER D. Helminth Fauna of Saurians from Puerto Rico with Observations on the Life Cycle of Luehenia inscripta (Westumb, 1821) and Description of Allopharynx puertoricensis sp. n. 106
SULLIVAN, JAMES J. The Trematode Genus Glypthelmins Stafford, 1905 (Plagiorchioidea: Macroderoididae), with a Redescription of G. facioi from Costa Rican Frogs ..116
DORAN, D.J. AND P.C. AUGUSTINE. Eimeria tenella: Comparative oocyst Production in primary Cultures of Chicken Kidney Cells Maintained in Various Media systems 126
KRITSKY, DELANE C. AND VERNON E. THATCHER. New Monogenetic Trematodes from Freshwater Fishes of Western Colombia with the Proposal of Anacanthoroides gen. n. (Dactylogyridae) 129
HASS, D.K. AND J.A. COLLINS. Comparative Anthelmintic Efficacy in Dogs treated with Vincofos, Ticarbodne, or Mebendazole 135
ESSER, R.P., V.G. PERRY AND A.L. TAYLOR. A Diagnostic Compendium of the Genus Meloidygne (Nematoda: Heteroderiae) 138
HOBBS, RUSSELL P. A Revision of the Genus Cephalurus Akhtar, 1947 (Nematoda: Oxyuridae) with Redescriptions of the North American Species 151
CAKE, EDWIN W., JR. A Key to Larval Cestodes of Shallow-water, Benthic Mollusks of the Northern Gulf of Mexico 160
BERGSTROM, R.C., L.R. MAKI AND B.A. WERNER. Small Dung Beetles as Biological Control Agents: Laboratory Studies of Beetle Action on Trichostronngylid Eggs in Sheep and Cattle Feces 171
FISCHTHAL, JACOB H. AND ALEXANDER D. ACHOLONU. Some Digenetic Trematodes from the Atlantic Hawksbill Turtle, Eretmochelys imbricata imbricata (L.), from Puerto Rico 174
ULMER, MARTIN J. AND HUGO A. JAMES. Nematotaenoides ranae gen. et sp. n. (Cyclophyllidae: Nematotaeniidae), from the Leopard Frog (Rana pipiens) in Iowa .185
ULMER, MARTIN J. AND HUGO A. JAMES. Studies on the Helminth Fauna of Iowa II. Cestodes of Amphibians 191
LIMBER, DONALD P. Artificial Infection of Sweet Corn Seedlings with Anguina tritici Steinbuch (1799) Chitwood, 1935 201
HATHAWAY, RONALD P. AND JOHN C. HERLEVICH. A Histochemical Study of Egg shell Formation in the Monogenetic Trematode Octomacrum lanceatum Mueller, 1934 203
STRINGFELLOW, FRANK. Occurrence of Carbonic Anhydrase and Its Relation to Ammonia Produced and Attraction of Both Sexes of Pelodera strongyloides 206
DAVIDSON, WILLIAM R. Endoparasites of Selected populations of Gray Squirels (Sciurus carolinensis) in the Southeastern United States 211
SHEFFIELD, HARLEY G., MARJORIE L. MELTON AND FRANKLIN A. NEVA. Development of Hammondia hammondi in Cell Cultures 217
FISHER, JAMES W. AND RICHARD S. WACHA. Coccidian Parasites from Game-farm Reared Pheasants, Phasianus colchicus, in Iowa 226
KINGSTON, NEWTON AND PETER C. TAYLOR. Naegleria sp., an Amoebo-flagellate from Physa gyrina say in a high Mountain Lake in Wyoming 227
ALAM, M. MASHKOOR, ABRAR M. KHAN AND S. K. SAXENA. A New Device for Rapid Picking-up of Heterodera Cysts 230
BERGELAND, MARTIN E., KENNETH S. TODD, JR. AND LOUIS F. OHLENDORF. Dermatitis in Sheep Caused by Pelodera strongyloides 230
BEACHAM, BRICE E. AND A. JAMES HALEY. Some Parasites of the White Perch, Morone americana (Gmelin), in Chesapeake Bay 232
BUCK, OWEN, D., C. LAWRENCE COOPER AND JOHN L. CRITES. Helminth Parasites of the Herring gull, Larus argentatus, from the Bass Island Region of Western lake Erie 233
KLEIN, M.G., W.R. NICKLE, P.R. BENEDICT AND DENNIS M. DUNBAR. Psamomermis sp. (Nematoda: Mermithidae): A New Nematode Parasite of the Japanese Beetle, Popillia japonica (Coeloptera: Scarabaeidae) 235
Anniversary award for 1975 238
Editorial Acknowledgement 134
Five Hundredth Meeting of the Helminthological Society of Washington 137
In Memoriam, Gerard Dikmas 150
In Memoriam, Satyu Yamaguti 150
International Congress of Parasitology 200
Minutes- Four Hundred Ninety- Third Through Five Hundredth Meetings ..237
Report of the Brayton H. Ransom Memorial Trust Fund 225
World Association for the Advancement of Veterinary Parasitology ..225
Index . . . . 239