24. —— ’87: Zelltheilung und Samenbildung bei Forficula auricularia. Festschrift f. A. v. Kölliker.
25. —— ’97: Zur Samen- und Eibildung beim Seidenspinner (Bombyx mori). Arch. f. mikr. Anat., Bd. 50.
[B] 26. Sutton, W. S., ’00: Spermatogonial Divisions in Brachystola magna. Kans. Univ. Quart., vol. 9.
27. Wilcox, E. V., ’95: Spermatogenesis of Caloptenus femur-rubrum and Cicada tibicen. Bull. of Mus. of Comp. Zool. Harvard., vol. 27.
28. —— ’96: Further Studies on the Spermatogenesis of Caloptenus femur-rubrum. Bull. of Mus. of Comp. Zool. Harvard., vol. 29.
[B] Nos. 12 and 26 were used when describing the material only and not the spermatid transformations.
Explanation of Plate II.
All drawings were made by the author with the aid of a camera lucida. All figures except 2, 3, 4 and 45 were made with a B. & L. 1⁄16 objective and one inch eye-piece, producing a magnification of 1340 diameters. Figs. 2, 3, 4 and 45 were drawn with a Leitz 1⁄16 objective and a Zeiss compensating ocular No. 12, giving a magnification of 2325 diameters. The drawings were not reduced in the photo-mechanical reproduction.
Fig. 1. An early telophase, in which the fibers appear like barrel staves. Some of the fibers have thickened.
Fig. 2. A later stage, in which the fibers are uniting, the clear space is forming, and the chromosomes are beginning to separate.