Schematics illustrating the regeneration process in Isodiametra pulchra after amputation of the posterior end. Anterior facing upwards in all drawings. Abbreviations on upper right corner of drawings denote days post amputation; con stands for control. The empty circle illustrates the statocyst; the filled black circle the mouth; the triangle the bursal nozzle; the vertical stripe positioned between the triangle and the square in controls, d5, d7 and d9 the female sphincter; and the square the male copulatory organ. A. General scheme of regeneration process. B. Regeneration process of posterior end in detail.