Catulona pensa Rolston, 1992

(Figs. 23–25; Tab. 2)

Eggs barrel-shaped to subspherical; pearly white prior to embryonic development; operculum broadly round and convex; chorion shiny and smooth. The aero-micropylar processes arranged in an ellipse not coincident to the operculum margin and translucent, short, and clubbed.

The chorion surface is smooth under SEM (Fig. 23). At the posterior pole, there are the remnants of adhesive substances. The operculum may be somewhat granulated, and the eclosion line is evident as a narrow marked strip inward from the AMPs (Figs. 24, 25). The AMPs are strongly clubbed and without evident openings (Figs. 24, 25). Under higher magnification, the surface of those processes is irregular but not spongy (Fig. 25).