The word, hypertrophy, has been commonly employed to designate the increase in the interstitial tissue in the testis. It was employed in the same sense by the present writer in his earlier paper. Inasmuch as the increase in the interstitial tissue which is associated with degenerative changes in the seminal epithelium involves an actual increase in the number of cellular elements it is more correctly designated as hyperplasia. The word, hyperplasia, will be employed in this sense in the present paper. *