Capivaccius bufo Distant, 1893

(Figs. 77–81; Tab. 2)

Eggs barrel-shaped; color prior to embryonic development white with a dark spot at operculum and a wide spot at the middle of lateral wall; operculum round, central portion slightly convex; chorion reticulated, light brown with dark brown spots. The eclosion line is not evident, and the AMPs are inconspicuous under SM.

The chorion surface is reticulated and covered by hexagonal cells with fringed edges under SEM (Figs. 77, 78). At the lateral wall, especially near the anterior pole, the cells are delimited by long and filiform chorionic projections (Fig. 78); this confers an aspect far more pilose to the lateral wall than to the operculum (Figs. 77, 79). The operculum is similarly sculptured, except for shorter fringes (Fig. 77, 79); the eclosion line is evident, marked by the absence of hexagonal cells and surrounded by dense irregular laminate chorionic projections (Figs. 80, 81). The AMPs are circularly arranged in a row around the anterior pole, short and clubbed but scarcely visible at lower magnification, except for circular and spaced spots in which the chorionic projections are sparser (Fig. 77). Their opening, if present, is not evident (Figs. 79, 81). Under high magnification, the surface of those processes is at most irregular but not spongy (Fig. 81).