FIGURE 18 in Four palaeonemerteans (Nemertea: Anopla) from a tidal flat in middle Honshu, Japan

FIGURE 18. Hubrechtella ijimai (Takakura, 1922) comb. nov., ZIHU­3122, female. A, transverse section through the first region of the proboscis. B, transverse section through the second region of the proboscis; arrowheads indicate spherical bodies. C, enlargement of the muscle cross in B. D, transverse section through the third region of the proboscis. E, transverse section through the fourth region of the proboscis; arrowheads indicate acidophilic spherules. MC, muscle cross in proboscis; PE, proboscis epithelium; PI, proboscis inner circular muscle layer; PL, proboscis longitudinal muscle layer; PN, nervous layer in proboscis; PO, proboscis outer circular muscle layer.