In the publications of the Norwegian North-Atlantic Ex- 
pedition 1876—1878 D. C. Danielssen and Johan Koren 
described in the year 1881 a new Gephyrean Epithetosoma 
norvegicum, and established a new family for it. Later on it 
was considered necessary to establish a special order Epithe- 
tosomaioidea (Shipley and other authors). However, in 1906 
Hjalmar Théel*) interpreted this mysterious form as a 
Nemertine. He writes as follows: | 
»According to my opinion the genus E»ithetosoma has 
nothing to do with the Gephyreans nor with their relatives. 
It is true, I have not had opportunity of investigating the 
remains of this animal, if such remains really exist at this 
date, and I am therefore reduced to relying solely upon the 
description and figures of the two Norwegian Investigators. 
Nevertheless, I dare entertain the opinion that my views may 
be acceptable. According to this opinion of mine Danielssen 
and Koren had before them for investigation a nemertean.* 
Théel’s opinion has not been accepted generally; thus 
-Poche (,Die Klassen und höheren Gruppen des Tierreichs*, 
in Archiv fir Naturgeschichte, Bd. 77, Supplementheit, 1911, 
p. 96) raised this order Epithetosomatoidea to the value of a 
class by the side of the classes Echiuroidea, Priapuloidea and 
Sipunculoidea. I quote what he writes on this question: 
»Ihéel (1906, p. 9f) sagt zwar, dass nichts im Text und 
Abbildungen von Danielssen und Koren (1881) der 
Annahme entgegen zu stehen scheint, dass Epithetosoma 
Danielssen & Koren (1881, p.- 39), die einzige hieher- 
1) Hj. Théel: Northern and Arctic invertebrates in the collection of 
the Swedish State Museum. II. Priapulids. K. Vetenskapsakademiens 
Handlingar. Bd. 40 No. 4, 
