VIII.—The Oogenesis of Carcinus mœnas Penn., with Special Reference to Yolk Formation

Abstract

The present paper is the third of a series recording the results of investigations into the relations of the structures present in the oocyte during the growth period, particularly in their bearing on yolk formation. A Crustacean was selected for various reasons: firstly, as representing a large class about the oogenesis of which little is known, this in contrast to most other Arthropod groups which have been studied by several authors; secondly, in the hope that it would prove to have no yolk nucleus, and would exhibit nucleolar extrusion, a hope which has been fairly satisfactorily justified; thirdly, for the utilitarian reason that it is a common animal, easily obtainable, and able to live under laboratory conditions during considerable periods.