External Appearance

(from Coe, W. R. (1905). Nemerteans of the west and northwest coasts of America.. Bull. Mus. comp. Zool. Harv.. 1-318)
General color of body usually brownish red, mahogany, or dark red, with only a tinge of brown, often appearing as if covered with a delicate whitish bloom. Anterior portion of head much deeper brown or almost black, on dorsal surface sharply marked off from a narrow white border which occupies the terminal and lateral margins of snout.Ventral side of snout white; this color is continuous with that of margins of dorsal surface, occasionally extending back on ventral side of head proper, and sometimes including mouth region also. Ventral surface of esophageal region of a reddish brown color, similar to that of dorsal surface, but of a paler and more grayish shade, often with grayish median band. Intestinal region of similar color but much influenced by grayish of intestinal canal, often pale gray in median line.