Intracapsular development in Ocenebra erinaceus.
a Front view of egg capsule. b Side view of egg capsule with concave/convex face visible. c Crawling juvenile. d Swimming late-pediveliger. e Juvenile with normal development (left) and juvenile with retarded development (right). The retarded juvenile is transparent and lacks shell. p plug, de developing embryo, st stem, bd basal disc, s shell, e eye, t tentacle, f foot, p protoconch, c cilia, vl velar lobe, sg siphonal groove