Auerbach, Leopold. Ueber merkwürdige Vorgänge am Sperma von Dytiscus marginalis. (Sitz. Ber. Akad., Berlin, 1893, pp. 185–203, 2 Figs.)
—— Zu dem Bemerkungen des Herrn Dr. Ballowitz betreffend das Sperma von Dytiscus marginalis. (Anat. Anzeiger, viii Jahrg., 1893, pp. 627–630.)
Toyama, K. On the spermatogenesis of the silkworm. (Bull, ii, No. 3, Coll. Agric. Imp. Univ. Tokyo, pp. 125–157, 1894, 2 Pls.)
Wilcox, E. V. Spermatogenesis of Caloptenus femur-rubrum and Cicada tibicen. (Bull. Mus. Comp. Zool., xxvii, 1895, pp. 32, 5 Pls.)
—— Further studies on the spermatogenesis of Caloptenus femur-rubrum. (Ibid., xxix, 1896, pp. 193–202, 3 Pls.)
Wilson, Edmund B. The cell in development and inheritance. (New York, 1896.) Also the writings of Platner, Waldeyer.
d. On the paired genital efferent passages
Loew, H. Abbildungen und Bemerkungen zur Anatomie einiger Neuropterengattungen. (Linnæa Ent., 1848, pp. 345–385, 6 Taf.)
Meinert, F. Anatomia Forficularum, i, Kjöbenhavn, 1863, 1 Pl.
—— Om dobbelte Saedgange hos Insecter. (Naturhist. Tidsskrift, 3 Raekke, v, 1868, pp. 278–294.)