(from Coe, W. R. (1905). Nemerteans of the west and northwest coasts of America.. Bull. Mus. comp. Zool. Harv.. 1-318)
The species has previously been reported from the west coasts of Panama and Mexico, and from the Galapagos Islands (Buerger, 1893). A number of large specimens were collected by Mr. Alexander Agassiz and by the Hassler expedition on the west coast of Panama. Several large specimens in the Yale Museum were collected in the same region by Mr. Bradley and another lot by Mr. McNeil. It is apparently the largest and most abundant nemertean found in that region.
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