49 
is beyond doubt a mistake, the „ Asterias tricolor “ being evidently 
an Ophiothrix (perhaps O. Liitkeni). — But in any case Liit- 
ken saw correctly the affinity of this Ophiurid with the Ophia- 
canthids. Lyman („Challenger" Oph. p. 201) removed the species 
to his new genus Ophiolebes , and since then it has been left there 
by the few authors who have mentioned it, thus by myself in 
Conspectus Faunæ Groenlandicæ, Echinodermer*) and by H. L. 
Clark in his Catalogue of Recent Ophiurans. 1 2 ) Doubtless it is 
also possible to find among the species referred to Ophiolebes such 
as bear a considerable resemblance to O. claviger. Nevertheless, 
if we compare it with the type species, O. scorteus Lym., with its 
thick investing skin, covering disk and arms and concealing even 
the armplates, it is evident that it is by no means nearly related 
to that species and that it can hardly belong to the same genus. 
And then it proves to fit so well to the diagnosis of the genus 
Ophiomitrellci Verrill that I cannot hesitate in referring it to that 
genus. Farran, in his paper on the deep-water Asteroidea, Ophiu- 
roidea and Echinoidea of the West Coast of Ireland (Fisheries Ire- 
land, Sci. Invest. 1912. VI. (1913), p. 44), also suggested that the 
species ought to be removed from the genus Ophiolebes and „placed 
with that group of species which includes Ophiacantha normani 
Lyman, Ophiacantha cataleimmoida H. L. Clark, Ophiacantha 
oididisca H. L. Clark, Ophiomitra globnlifera Koehler, Ophio- 
mitra relicta Koehler and Ophiomitrella cordifera KoehlerThis 
is, on the other hånd, a „group“ no less unnatural than that from 
which Farran suggests to remove the species in question; and, 
moreover, he still leaves the species in the genus Ophiolebes. (I 
shall not enter on a discussion of the other species referred to 
Ophiolebes , but I have no doubt that they do not rightly belong 
there all of them). 
In the „Échinodermes provenant d. campagnes du yacht Prin- 
cesse Alice" 3 ) Koehler describes and figures (PI. XXIX, 1—2) a 
species, Ophiomitrella cordifera , which is evidently very closely 
related to, perhaps even identical with O. clavigera. The disting- 
uishing characters are, judging from Koehler’s description and 
1 ) Medd om Grønland. XXIII. 1913. p. 361. 
2 ) Mern. Mus. Comp. Zool. Vol. XXV. 1915. p. 193. 
3 ) Res. Camp. Scientif. Monaco Fase. XXXIV. 1909. p. 192. 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 72. 4 
