Figure 21 in Systematics and phylogeny of the hoplonemertean genus Diplomma (Nemertea) based on molecular and morphological evidence

Figure 21. Diplomma serpentina (Stimpson, 1855). A, transverse section through foregut region, showing dorsoventral muscles (indicated by arrowheads); B, transverse section through intestinal region, showing dorsoventral muscles running outside lateral nerve cord (indicated by black arrowhead) and inside ovary (indicated by white arrowheads); C, transverse section through pyloric region – dorsoventral muscles were not evident in this individual; D, transverse section through foregut region, showing dorsoventral muscles (indicated by arrowheads) running outside lateral nerve cord and lateral blood vessel; E, transverse section through foregut region, showing dorsoventral muscles (indicated by arrowhead) running outside excretory tubule. A, B, paraneotype (ZIHU-3166); C, paraneotype (ZIHU-1356); D, E, paraneotype (UPLB- NHM 0488). Abbreviations: DE, dermis; EX, excretory collecting tubule; IC, intestinal caecum; LN, lateral nerve cord; LV, lateral blood vessel; OV, ovum; PA, parenchyma; PY, pylorus; RC, rhynchocoel; ST, stomach. Scale bars: A, B = 50 Mm; C, E = 30 Mm; D = 100 Mm.