The Millipede's Four Penises (IMAGE) Pensoft Publishers Caption The new millipede's four penises. The ninth and tenth pair of legs of <i>Illacme tobini</i> are used as copulatory devices to transfer sperm to the female. Credit Paul Marek, Virginia Tech Usage Restrictions CC-BY 4.0 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.