Egg—Conoidal, truncated, the top a little arched ; the sides more or less convex, varying; the height to the breadth as 9 to 7; marked by 14 straight ribs, which are compressed and elevated, and run from base to top ; crossed by about 11 striæ, horizontal, rather prominent ; the spaces between the ribs and striæ are quadrangular, the shortest side being with the long axis of the egg; these spaces are depressed and are either flat or slightly convex ; the summit is covered with rows of cells, concentric, those of the outer two rows large, hexagonal and irregular, of the third row small, hexagonal ; within these are 8 small cells, not depressed, irregularly rhomboidal and forming an eight-rayed star ; in the centre a minute star of six rays. Duration of this stage 4 to 5 days.