FIGURE 4 in Callinera emiliae sp. nov. (Nemertea: Palaeonemertea) from Negros Island, the Philippines

FIGURE 4. Callinera emiliae sp. nov. Holotype, ZIHU-3187, photomicrographs of transverse sections. A, rhynchodaeal sphincter. B, ventral cerebral commissure. C, proboscis insertion. Paratype, UPLB-MNH-Z-NS-0389, D–K, junction between anterior (indicated by white arrowheads) and posterior (indicated by black arrowheads) rhynchocoel chamber; grey arrowheads indicating 'pleats' of posterior rhynchocoel chamber wall, originating from body-wall inner and outer circular muscle layers.