Section 20. Tabulating These Facts--

In the adult male: Pronephros disappears. The Mullerian duct (? = pronephric duct) disappears. Mesonephros = Epididymis; its duct, the urogenital. Metanephros and duct, not clearly marked off from Mesonephros. (Compare Dog-fish, Section 19.)

In the adult female: Pronephros disappears. The Mullerian duct, the oviduct. Mesonephros and Metanephros, the kidney, and their unseparated ducts, the ureters.