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(from Coe, W. R. (1901). Papers from the Harriman Alaska Expedition. XX. The nemerteans.. Proc. Wash. Acad. Sci.. 1-110.)
Head with deep, horizontal furrows. Proboscis usually with three muscular layers and muscular crossings.
Caudal cirrus present. Body rather firm; incapable of swimming.
Dorsal surface deep purple or wine-color with 15-40 sharp, pure white, transverse lines; tip of snout with triangular, bright orange spot; ventral surface of body pure white.