Fig. 9 in Cutting the ribbon: bathyal Nemertea from seeps along the Costa Rica margin, with descriptions of 2 new genera and 9 new species

Fig. 9. Chernyshevia escarpiaphila gen. et sp. nov. A–C. Paratype (MZUCR Nemertea Collection MZUCR-104-01), transverse histological sections. D–G. Holotype (SIO-BIC N279), histological sections. A. Anterior tip of head with proboscis pore. B. Region anterior to cerebral ganglia with wellvisible cephalic glands. C. Brain region depicting ventral commissure. D. Longitudinal section through brain region showing the cerebral canal (arrowheads). E. Lateral nerve cord with accessory nerve in the stomach region. F. Rhynchocoel in stomach region with well-visible mid-dorsal vessel. G. Intestinal region with testes. Abbreviations: an = accessory nerve; br = brain; cg = cephalic gland; cm = circular muscle layer; co = cerebral organ; dl = dorsal brain lobe; es = esophagus; i = intestine; lm = longitudinal muscle layer; ln = lateral nerve cord; mv = mid-dorsal vessel; p = proboscis; pcn = precerebral nerves; pp = proboscis pore; rc = rhynchocoel; st = stomach; t = testis; vc = ventral commissure; vl = ventral brain lobe. Scale bars = 100 µm.