The works of Francis Maitland Balfour, Volume 3 (of 4)
CHAPTER XXIV. GENERATIVE ORGANS AND GENITAL DUCTS. Pp. 741-753.
Generative organs, pp. 741-748. Porifera, p. 741. Coelenterata, pp. 741-743. Chætopoda and Gephyrea, p. 743. Chætognatha, pp. 743-745. Polyzoa, p. 745 Nematoda, p. 745. Insecta, p. 745. Crustacea, pp. 745, 746. Chordata, pp. 746-748. Bibliography of generative organs, p. 748. Genital ducts, pp. 748-753.