Observations on course of cremasteric muscle in perineal testes with commentary on gubernaculum.

Three instances of perineal testes are described including the fourth reported case of bilateral perineal testes. In each instance the course of the cremasteric muscle was traced distally and was found to terminate in the perineum. It is suggested that if the cremasteric muscle forms in the periphery of the gubernaculum, then the cremasteric muscle should be indicative of the course and the termination of the gubernaculum.