Friedrich, 1968
Monostiliferous hoplonemerteans with two pairs of transverse cephalic furrows; mostly with numerous large eyes, but one species eyeless; rhynchocoel full body length, with wall composed of a wickerwork of interwoven longitudinal and circular muscle fibres; proboscis moderately well developed; dermis thin; body wall musculature, especially longitudinal layer, well developed; except for one species, without diagonal muscle layer between body wall circular and longitudinal muscles; frontal organ present; cephalic glands usually well developed and posteriorly reaching the cerebral ganglia; cerebral sensory organs large, primarily situated posterior to cerebral ganglia; nervous system with neither neurochords nor neurochord cells, without an accessory lateral nerve; blood vascular system with three longitudinal vessels, mid-dorsal vessel with a single vascular plug; excretory system well developed, extending from rear of cerebral ganglia to hind regions of foregut; intestinal caecum without anterior diverticula but with lateral pouches; sexes separate.
Source: Gibson, 1982.
The following species of this genus occurs in the region:
Nipponnemertes pulcher