L-R: Head of male (dorsal view); Mature male specimen; Female with ripe ova; Head of female

L-R: Head of male (dorsal view); Mature male specimen; Female with ripe ova; Head of female
Photographer: Coe, W.R.

Coe, W. R. (1904). Nemerteans of the Pacific coast of North America. Part II. Harriman Alaska Series. 11, 111–220.