1. Ecomorphic variation in gemmoscleres of Ephydatia fluviatilis Linnaeus (Porifera: Spongillidae) with comments upon its systematics and ecology

   • Michael A. Poirrier

   OriginalPaper 01 May 1974 Pages: 337 - 347

2. Biology of excessive weed growth in the hydro-electric lakes of the Waikato River, New Zealand

   • V. J. Chapman
   • J. M. A. Brown
   • J. L. Carr

   OriginalPaper 01 May 1974 Pages: 349 - 363

3. Observations on reproduction in Scytonematopsis ghazipurensis Pandey & Mitra

   • Devesh C. Pandey

   OriginalPaper 01 May 1974 Pages: 365 - 367

4. Invertebrate drift in the Snake River, Wyoming

   • Richard L. Kroger

   OriginalPaper 01 May 1974 Pages: 369 - 380

5. Calcareous deposits of the brackish-water lakes in Egypt

   • Massoud A. H. Saad

   OriginalPaper 01 May 1974 Pages: 381 - 387

6. On the rotifer plankton of some East African lakes

   • Birger Pejler

   OriginalPaper 01 May 1974 Pages: 389 - 396

7. The influence of salinity on a tropical estuarine shipworm Nausitora hedleyi Schepman (Bivalvia - Teredinidae)

   • M. Saraswathy
   • N. Balakrishnan nair

   OriginalPaper 01 May 1974 Pages: 397 - 411

8. Observations on the breeding biology of Melita zeylanica stebbing, a brackish water amphipod

   • L. Krishnan
   • P. A. John

   OriginalPaper 01 May 1974 Pages: 413 - 430

9. The California freshwater isopod, Asellus tomalensis, rediscovered and compared with Asellus occidentalis

   • Thomas E. Bowman

   OriginalPaper 01 May 1974 Pages: 431 - 441

10. Laboratory studies on competition for food of the larvae of some British sciomyzid flies (Diptera: Sciomyzidae) I. Intra-specific competition

    • Ookeow Beaver

    OriginalPaper 01 May 1974 Pages: 443 - 462

11. Utilization of diversity indices in evaluating the effect of a paper mill effluent on bottom fauna

    • Albert Hendricks
    • Don Henley
    • J. K. G. Silvey

    OriginalPaper 01 May 1974 Pages: 463 - 474

12. Subbaromyces aquatica, a new ascomycete from India

    • Ch. Manohara Chary
    • P. Ramarao

    OriginalPaper 01 May 1974 Pages: 475 - 479

13. Certain organism-substrate relationships affecting the distribution of Uca minax (Crustacea: Decapoda)

    • Nicholas H. Whiting
    • Gerald A. Moshiri

    OriginalPaper 01 May 1974 Pages: 481 - 493

14. The seasonal periodicity of emergence of insects from two ponds in Hertfordshire, England, with special reference to the chironomidae (Diptera: Nematocera)

    • M. A. Learner
    • D. W. B. Potter

    OriginalPaper 01 May 1974 Pages: 495 - 510

15. An observation of an association between adaptive pigmentation and thermal tolerance of fish

    • Richard M. Emery

    OriginalPaper 01 May 1974 Pages: 511 - 516

16. A comparative study between two different artificial substrate samplers and regular sampling techniques

    • John S. Crossman
    • John Cairns Jr.

    OriginalPaper 01 May 1974 Pages: 517 - 522

17. Cellulose degradation in different types of limnic environments

    • Siegfried Fleischer
    • Kerstin Larsson

    OriginalPaper 01 May 1974 Pages: 523 - 536

18. References to the use of cultures of algae and protozoa

    • E. A. George

    OriginalPaper 01 May 1974 Pages: 537 - 538

19. Libri novi

    BookReview 01 May 1974 Pages: 539 - 541