1. Albert Westphal 75 Jahre

   • H. Mühlpfordt

   Announcement Pages: 425 - 426

2. Otto Pflugfelder 80 Jahre

   • Werner Frank

   Announcement Pages: 427 - 429

3. The effect of isometamidium chloride onTrypanosoma vivax occurring within the insect vector (Glossina)

   • Wilfred Edozie Agu

   Original Investigations Pages: 431 - 435

4. Development by genetic recombination of a line ofEimeria tenella resistant to robenidine, decoquinate and amprolium

   • H. D. Chapman

   Original Investigations Pages: 437 - 441

5. Purification of metacyclic forms ofTrypanosoma cruzi by Percoll discontinuous gradient centrifugation

   • S. Castanys
   • A. Osuna
   • L. M. Ruiz-Pérez

   Original Investigations Pages: 443 - 449

6. Zur Feinstruktur und Entwicklung vonSarcocystis aucheniae beim Lama

   • T. Schnieder
   • F. -J. Kaup
   • M. Rommel

   Original Investigations Pages: 451 - 458

7. Scanning electron microscopic studies ofTrypanosoma cruzi in the rectum of its vectorTriatoma infestans

   • C. A. Böker
   • G. A. Schaub

   Original Investigations Pages: 459 - 469

8. Cyclic transmission of an AfricanBesnoitia species by snakes of the genusBitis to several rodents

   • F. R. Matuschka
   • U. Häfner

   Original Investigations Pages: 471 - 476

9. Effects of elevated haemolymph levels of the female gonadotropic dorsal body hormone on the cercarial production ofTrichobilharzia ocellata inLymnaea stagnalis

   • J. F. Sluiters
   • W. P. M. Geraerts

   Original Investigations Pages: 477 - 484

10. The effect of infection ofLymnaea stagnalis withTrichobilharzia ocellata on the presence of, and reactivity to the ovulation hormone of the host

    • J. F. Sluiters
    • G. E. Dogterom

    Original Investigations Pages: 485 - 489

11. Presence ofSchistosoma mansoni antigens in liver, spleen and kidney of infected mice: a sequential study

    • I. El-Dosoky
    • E. A. E. Van Marck
    • A. M. Deelder

    Original Investigations Pages: 491 - 497

12. Recherches sur les ultrastructures superficielles de Trématodes parasites d'Amphibiens

    • G. Oliver
    • R. Bourgat
    • R. Touassem

    Original Investigations Pages: 499 - 508

13. The reduction of worm burden and egg production inMicrophallus pygmaeus (Levinsen 1881) (Digenea: Microphallidae) induced by a concurrent infection withHymenolepis nana (Cestoda: Cyclophyllidea)

    • A. L. Molan
    • B. L. James

    Original Investigations Pages: 509 - 513

14. Cotylurus erraticus: Section autoradiography of thymidine incorporation during growth and development in vitro

    • D. W. Halton
    • J. S. Mitchell

    Original Investigations Pages: 515 - 524

15. Electron microscope study of the body wall and the gut of adultLoa loa

    • M. Franz
    • J. Melles
    • D. W. Büttner

    Original Investigations Pages: 525 - 536

16. The nervous system ofDiplostomum pseudospathaceum Niewiadomska 1984 (Trematoda, Diplostomatidae)

    • Katarzyna Niewiadomska
    • Tadeusz Moczoń

    Original Investigations Pages: 537 - 548

17. Leishmanial excreted factors (EF) are distinguished by characteristic electrophoretic mobilities

    • G. M. Slutzky
    • S. Yarus
    • C. L. Greenblatt

    Short Communications Pages: 549 - 551

18. Evidence for the incorporation of virus-like particles intoTrypanosoma

    • D. H. Molyneux
    • P. Heywood

    Short Communications Pages: 553 - 556

19. Immunity toHymenolepis diminuta: Attempts to protect mice by parenteral injection of antigen

    • E. E. Elowni

    Short Communications Pages: 557 - 559

20. On the infra specific variations in the frequency of supernumerary testes inSchistosoma mansoni

    • Gamil N. Soliman
    • Noshy S. Mansour
    • Faiza M. El-Assal

    Short Communications Pages: 561 - 564