Figure 2.Phoronis ijimai Oka, 1897, NSMT-Te 879. A Living individuals collected from the pier of Misaki Marine Biological Station B enlargement of living individuals C preserved individual (10% formalin seawater) with a transparent cylindrical tube.
Figure 3.Phoronis ijimai Oka, 1897, NSMT-Te 880. A Living bivalve (Barbatia sp.) with various sessile organisms B Living Phoronis ijimai on the shell (arrowheads).
Figure 5.Reconstructed three-dimensional images and transverse sections of the nephridium of Phoronis ijimai Oka, 1897, from NSMT-Te 886 (A, B, D) and NSMT-Te 884 (C). A Lateral view, showing the long nephridial papillae above the anus B dorsolateral view, showing the offset arrangement of the nephridia, with the curved ascending branch and large anal funnel extending toward the esophagus C transverse section through the nephridial papilla, showing the nephridiopore D transverse section through the ascending branch, showing the large anal funnel opening toward the esophagus, Abbreviations: ab ascending branch; af anal funnel; an anus; es esophagus; in intestine; lne left nephridium; np nephridial papilla; p nephridiopore; rne right nephridium. Planes C and D in panel A indicate the positions of the transverse sections in C and D.
Figure 6.Phoronis ijimai. A NSMT-Te 886, transverse section through the posterior part of the body, showing four mesenteries and the position of the giant nerve fibers B NSMT-Te 885, enlargement showing longitudinal muscles of the bushy type C NSMT-Te 885, enlargement of the left giant nerve fiber situated at the base of the left lateral mesentery. Abbreviations: am anal mesentery; i intestine; llm left lateral mesentery; lnf left giant nerve fiber; m longitudinal muscle; om oral mesentery; rlm right lateral mesentery; rnf right giant nerve fiber; s stomach.
Figure 7.Phoronis ijimai. A NSMT-Te 878, eggs brooded in the lophophore (some tentacles have been removed) B NSMT-Te 884, transverse section through the basal part of the lophophore, showing mature eggs on the basal nidamental glands C NSMT-Te 883, enlargement of brooded eggs, showing various developmental stages. Abbreviations: eg egg; te tentacle.
