THE SPERMATOCYTE DIVISIONS OF THE LOCUSTIDÆ.
BY C. E. M’CLUNG.
With Plates VII, VIII, IX, and X.
| I. | Introduction. | |
| II. | Methods. | |
| III. | Nomenclature. | |
| IV. | Observations. | |
| (a) | General Structure and Form of the Testes. | |
| (b) | The Spermatogonia. | |
| (c) | The First Spermatocytes. | |
| (d) | The Second Spermatocytes. | |
| (e) | The Spermatids. | |
| V. | Comparisons and Conclusions. | |
| (a) | Nomenclature. | |
| (b) | The Spermatocytes of the Acrididæ and the Locustidæ. | |
| (c) | Formation of the Tetrads. | |
| (d) | The Spermatocyte Divisions. | |
| (e) | The Accessory Chromosome. | |
| (f) | Individuality of the Chromosomes. | |
| (g) | Nucleoli. | |
| (h) | Rest Stage. | |
| VI. | Summary. | |
| VII. | Bibliography. | |