BuL. U. S. B. F., 1908. 



Plate CII. 



o 



'x<'f^ 



Fig. I.— Turbot eggs with embryo. Fourth day. 



Fia. 2. — I^arva with viteUus. Eighth day. 



Fig. 3. — I,ar\'a with vitellus almost entirely resorhed — begiTiniiig of the critical period. Tenth day. 



