Major body components in stage 7–8 embryos of <i>Strigamia maritima.</i>

<p>Specimens photographed with fluorescent nuclear staining (Sytox Green) to show the morphology. <b>A.</b> Lateral view of whole-mount embryo corresponding to Fig. 4D, head on the upper left. The juxtaposed ventral surface (<i>arrow</i>) of the embryo is obscured and out of sight. <b>B.</b> Flat-mounted posterior region of embryo corresponding to Fig. 2C, anterior to the left. In both A and B dots indicate the approximate boundary between the prospective dorsal and lateral tissues as observed in the adult. Squares indicate the approximate boundary between the prospective lateral and ventral tissues as observed in the adult.