One: General.- 1. The Nile: Description, hydrology, control and utilisation.- 2. Implications of sea mining for the Red Sea environment.- 3. Physical and chemical characteristics of the Blue Nile and the White Nile at Khartoum.- 4. A faunistic reconnaissance of Lakes Kundi and Keilak, western Sudan.- 5. A note on some investigations carried out in the area of the Sudan Plain to be affected by the Jonglei Canal.- Two: Algae and primary production.- 6. A quantitative study of the phytoplankton in the Blue and White Niles at Khartoum.- 7. Primary production and respiration of the phytoplankton in the Blue and White Niles at Khartoum.- 8. Some algae from the Red Sea Hills in north-eastern Sudan.- Three: Macrophytes.- 9. Permanent swamp vegetation of the Upper Nile.- 10. Effects of 2,4-D on mature and juvenile plants of water hyacinth (Eichornia crassipes (Mart.) Solms).- 11. Observations on the effect of the weevils Neochetina eichhorniae Warner and Neochetina bruchi Hustache on the growth of water hyacinth.- 12. Mineral nutrient demands of the water hyacinth (Eichhornia crassipes (Mart.) Solms) in the White Nile.- 13. Ecological observations on mangroves of the Red Sea shores of the Sudan.- Four: Anthropods.- 14. A review of the rotifer fauna of the Sudan.- 15. Bogidiella nubica n.sp. from interstitial waters of the Sudan (Crustacea: Amphipoda).- 16. The occurrence of Limnohalacarus (Acari: Halacaridae) in Lake No, White Nile.- 17. On the freshwater ostracods (Crustacea, Ostracoda) of the Sudan, with special reference to the Red Sea Hills, including a description of a new species.- 18. Cladocera from the Sudan: Red Sea Hills, Jebel Marra and valley of the main Nile.- 19. Nilobathynella predynastica n.g., n.sp. (Crustacea: Bathynellacea) from the Nile valley in Nubia.- 20. Parapseudoleptomesochra attirei n.sp., a new species of Nitocrella from Nubia (Copepoda, Harpacticoida).- 21. Dragonflies (Insecta, Odonata) from the Red Sea Hills and the main Nile in Sudan.- 22. The calanoid copepods of the Nile system.- 23. Food and food selection of the Penaeid prawn Penaeus monodon (Fabricius).- Five: Molluscs.- 24. Ring formation and annual growth in Corbicula consobrina Caillaud, 1827 (Bivalvia, Corbiculidae).- 25. The invasion of Biomphalaria pfeifferi by Schistosoma mansoni miracidia and the development of daughter sporocysts.- 26. Location of Biomphalaria pfeifferi by Schistosoma mansoni miracidia in stagnant and running water under field conditions.- 27. Feeding and growth of the pearl oyster Pinctada margaritifera (L.) in Dongonab Bay, Red Sea.- 28. Aquatic snails of the Jonglei region, southern Sudan, and transmission of trematode parasites.- Six: Fish.- 29. The food and growth of pelagic 0+ Alestes nurse (Characidae) from the Blue Nile, near Khartoum.- 30. Use of the frontal bone in age determination of Labeo horie (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan.- 31. Seasonal abundance, breeding and sex-structure of populations of Tilapia nilotica (L.) and Labeo niloticus (F.) in the Jebel Aulia Dam area of the White Nile.- 32. Aspects of the biology of the catfish Clarias lazera (Cuv. & Val.) related to its economic cultivation.- 33. Fishes and fisheries of Lake Nubia, Sudan.- 34. Gill net selectivity in Lake Nubia fisheries.- 35. Breeding of Barbus bynni (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan.- 36. Food and feeding habits of Labeo niloticus (Pisces, Cyprinidae) in Jebel Aulia Reservoir, Sudan.- 37. On the reliability of the growth rings in two species of the family Characidae in the Sudan.- 38. Adaptive respiratory significance of organophosphates (ATP & GTP) in air-breathing fishes.- 39. Development of dependence on aerial respiration in Polypterus senegalus (Cuvier).
