General Description

(from Coe, W. R. (1901). Papers from the Harriman Alaska Expedition. XX. The nemerteans.. Proc. Wash. Acad. Sci.. 1-110.)

Head with deep lateral, longitudinal furrows. Proboscis usually with three muscular layers and muscular crossings.

Caudal cirrus present in perfect specimens, but often missing. Body long and flat, with thin lateral margins. Swims readily. Dorso-ventral and diagonal muscles well developed. Eyes usually absent.

Head and anterior portions of body narrow and slender, with remarkable long and deep cephalic furrows. Dark brown or purplish, paler on borders of cephalic slits and tip of snout.