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