Figures 7–12 in First record of the family Spengeliidae (Hemichordata: Enteropneusta) from Chinese waters, with description of a new species

Figures 7–12. Glandiceps qingdaoensis, new species, histological characteristics. (7) Transverse section through base of proboscis passing through the pouched region of the stomochord, behind the glomerulus, showing the lateral pouch and median pouch of stomochord. The pericardium is above the median pouch. (8) Longitudinal section through median septum of the proboscis to show the vermiform process of the stomochord and its varied calibre (diameter of vermiform process tube). (9) Transverse section through anterior end of the stomochord showing small pericardial auricles and pericardium wedged in the longitudinal muscles. (10) Transverse section through commencement of the heart–kidney complex (include stomochord, glomerulus, and pericardium). The section passes immediately in front of the anterior end of the pericardium, and shows the right and left halves of the glomerulus on either side of the stomochord and distinct median glomerulus. (11) Longitudinal section through the heart–kidney complex showing large left half part of glomerulus, which envelops the anterior stomochord. (12) Transverse section through the junction between proboscis and collar showing chondroid tissue and nuchal skeleton which is strongly developed and occupying a large portion of the section.