FIGURE 22 in Convolutidae (Acoela) from Belize

FIGURE 22. Polychoerus parvus sp. nov.; photomicrographs of sagittal histological sections stained with toluidine blue. A. Section through male and female copulatory organs and median caudal filament. B. Section through ventral body wall along lateral margin with numerous papillae.Published as part of Achatz, Johannes G., Hooge, Matthew D. & Tyler, Seth, 2007, Convolutidae (Acoela) from Belize, pp. 35-66 in Zootaxa 1479 on page 62, DOI: 10.5281/zenodo.17682