FIGURE 8 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 8. Polyophthalmus zhadanae sp. nov. Micro-CT images of internal anatomy. (A) anterior end, 3D sagittal section (sample P13063; paratype MNCN 16.01/19115); (B) anterior end, 2D sagittal section (sample P12629; paratype MNCN 16.01/19102); (C) anterior end, 2D frontal section (sample P12629; paratype MNCN 16.01/19102). Abbreviations: adbv— antero-dorsal blood vessel/s; bc—body cavity; bcc—buccal cavity; bo—buccal opening; br—brain; nuo—nuchal organ; obm— oblique muscles; oes—oesophagus; po—proboscis opening; ppa—prostomial papilla; pr—prostomium; prb—proboscis; sep— septum; sto—stomach; vlml—ventral longitudinal muscle layer.