Figure 4 in Solenogastres (Mollusca) from expeditions off the South Iberian Peninsula, with the description of a new species

Figure 4. Alexandromenia avempacensis sp. nov. (A) Schematic organization of the anterior body; (B) posterior body. at, atrium; bg, buccal ganglion; cg, cerebral ganglion; cu, cuticle; dc, anterodorsal midgut caecum; dso, dorsoterminal sense organ; go, gonad; gp, gonopericardioduct; he, heart; mc, musculature; mg, midgut; mo, mouth; pa, pallial cavity; pc, pericardium; pd, pericardioduct; ph, pharynx; pp, pedial pit; ra, radula; re, rectum; rf, respiratory folds; rs, radular sac; rsh, radular sheath; sc, suprarectal commissure; sd, spawning duct; sr, seminal receptacle; vfg, ventrolateral foregut glandular organ; vg, ventral ganglion.