FIGURE 7 in Marine flatworms (Platyhelminthes: Polycladida) found in empty barnacle shells including a new species, from southern Mexican Pacific

FIGURE 7. Prosthiostomum cf. parvicelis. A–D, F. (UMAR PLAT-043), E (UMAR PLAT-042). A–D. male and female reproductive system, in sagittal histological sections; D. stylet and F. accessory vesicles and seminal vesicle in sagittal histological section; E. male reproductive system, in whole mount. Structures: ac= accessory vesicle, acd= accessory vesicle duct, cg= cement gland, ed= ejaculatory duct, gp= glandular epithelium, ma= male atrium, mg= male gonopore, mi= main intestine, ovi= oviducts, pp= penis papilla, st= stylet, sv= seminal vesicle, va= vagina.