Verrill, 1892 emend. Brinkmann, 1917a
Body rather slender, moderately flattened; posterior end with well developed caudal fin, often posteriorly bilobed; rhynchocoel nearly as long as body; adult males with well-developed tentacles, spermaries numerous, in two groups beside and behind brain; intestinal diverticula without ventral branch.
Genus Nectonemertes