In 1960 Blos published an account of three pubescent cryptorchid boys relating their disturbances to a pathogenic parent-child relationship. He showed how the cryptorchid testicle was a focus for the distortion of body-image formation and psychosexual development. In the following year Bell delineated the psychological importance of the testicles and the scrotal sac, and hypothesized the existence of a testicular phase of psychosexual development. In subsequent years she again emphasized the significance of the scrotal sac and its contents in both the normal development as well as the psychopathology of children. Yazmajian recently outlined the importance of cryptorchism in the genesis of transvestite behavior. We have presented two case histories which show how cryptorchism in childhood played a vital role in the genesis of adult homosexual behavior.