THE DEVELOPMENT AND STRUCTURE OF THE ACROSOME IN THE SPERM OF LUMBRICUS TERRESTRIS L.

Abstract
The formation and final structure of the acrosome of the sperm of Lumbricus terrestris L. are described on the basis of an electron microscope study. The acrosome is compared with others described on the same basis, and it is concluded that invertebrate acrosomes form a series from simple to complex, with the Lumbricus sperm one of the most complex, both in manner of formation and in final structure.