1. Karyotypes of eight species of phytoseiid mites (Acarina: Mesostigmata) from Madagascar

   • Rose Blommers-Schlösser
   • L. Blommers

   OriginalPaper Pages: 145 - 148

2. The inheritance and expression of sterility in hybrids of dihaploid and cultivated diploid potatoes

   • C. P. Carroll

   OriginalPaper Pages: 149 - 162

3. Die Speicheldrüsenchromosomen der StechmückeCulex Pipiens L. IV. Der Chromosomale Geschlechtsdimorphismus

   • L. Dennhöfer

   OriginalPaper Pages: 163 - 175

4. Progress in the study of aneuploids in barley

   • G. Fedak
   • T. Tsuchiya

   OriginalPaper Pages: 177 - 190

5. Minimum frequency of compound autosomes inDrosophila melanogaster to achieve chromosomal replacement in cages

   • M. Fitz-Earle

   OriginalPaper Pages: 191 - 201

6. Sex determination in bees. I. Balance between femaleness and maleness genes inBombus atratus franklin (Hymenoptera,Apidae)

   • Carlos A. Garófalo
   • Warwick Estevam Kerr

   OriginalPaper Pages: 203 - 209

7. The effect of experience on the selective behaviour of song thrushes feeding on artificial populations ofCepaea (held)

   • P. H. Harvey
   • N. Birley
   • T. H. Blackstock

   OriginalPaper Pages: 211 - 216

8. The genetic structure of some steppe populations of the snailCepaea vindobonensis (Pf.)

   • J. S. Jones

   OriginalPaper Pages: 217 - 225

9. Intranuclear destruction of heterochromatin in two species of armored scale insects

   • Robert M. Kitchin

   OriginalPaper Pages: 227 - 235

10. Influence of B-chromosomes on meiosis in pearl millet

    • J. V. Pantulu
    • V. Manga

    OriginalPaper Pages: 237 - 251

11. A comparative banding analysis of chromosomes in three species of lemurs (Primates,Lemuridae)

    • M. Sasaki
    • M. Oshimura
    • N. Kondo

    OriginalPaper Pages: 253 - 261

12. Heterochromatin (C-bands) in somatic and male germ cells in three species ofMicrotinae

    • M. T. Zenzes
    • I. Voiculescu

    OriginalPaper Pages: 263 - 272