. Journal of morphology . -•A ^^^^^. The Jouhnal of Mobphologv.— XX. No 3 Hof Plate longicornis. T, 10. Speriiiatocytic prophase. 18 chromosomes. T, 11. Spermatocytic prophase. Origin of kinoplasm within the nucleus. T, 12. Spermatocytic prophase. Centrosomes within the nucleus. T, 13. Formation of equatorial plate. Pole view. 18 chromosomes. T, 14. Metaphase. T, 15. Young spermatid. T, 16-18. Gradual diffexentiation of head, middle-piece and tail. Idotea irrorata. I, 10. Post-syuapsis. Peculiar appearance of the nucleolus. I, 11. Resting spermatocyte or very early pr
. Journal of morphology . -•A ^^^^^. The Jouhnal of Mobphologv.— XX. No 3 Hof Plate longicornis. T, 10. Speriiiatocytic prophase. 18 chromosomes. T, 11. Spermatocytic prophase. Origin of kinoplasm within the nucleus. T, 12. Spermatocytic prophase. Centrosomes within the nucleus. T, 13. Formation of equatorial plate. Pole view. 18 chromosomes. T, 14. Metaphase. T, 15. Young spermatid. T, 16-18. Gradual diffexentiation of head, middle-piece and tail. Idotea irrorata. I, 10. Post-syuapsis. Peculiar appearance of the nucleolus. I, 11. Resting spermatocyte or very early prophase. I, 12. Spermatocytic prophase. Origin of kinoplasm within the nucleus, I, 13-15. Spermatocytic prophases. The chromosomes are joined either end to end (a) or side by side (b). c, cross-shaped chromosomes. 14-15, surface , IG. Later prophase. One of the chromosomes is abnormally late in condensing. Centrosomes visible within the , 17. Equatorial plate. Pole view. 28 , 18. Equatorial plate. Sid
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