Kerckring has a description of an individual in whom the scrotum was absent.
In those cases in which the testicles are still in the abdominal cavity the individuals are termed cryptorchids.

Johnson has collected the results of postmortem examinations of 89 supposed cryptorchids.

In eight of this number no testicles were found postmortem, the number found in the abdomen was uncertain, but in 18 instances both testicles were found in the inguinal canal, and in eight only one was found in the inguinal canal, the other not appearing.

The number in which the semen was examined microscopically was 16, and in three spermatozoa were found in the semen; one case was dubious, spermatozoa being found two weeks afterward on a boy's shirt.

The number having children was ten.