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Antedon eelticus, Barrett sp., of which only a very poor description 
had ever been published. In the meantime I had met with a 
specimen off Disco, when in the ‘‘Valorous” with Dr Gwyn 
Jeffreys (1875), and I recognised it at once as distinct from an 
Ant. esehriehti obtained during the same cruise. Three other 
examples were dredged by Fielden in the “ Alert ” a few months 
later, two at Discovery Bay (lat. 81° 41' N.), and one at Franklin 
Pierce Bay (lat. 79° 25' hi.); and when the “ Challenger” Comatuloe 
came into my hands I found the same type among a quantity of 
individuals of Ant. esehriehti, from a dredging in 51 fathoms a 
little to the south of Halifax. I have little doubt that it was also 
obtained by the “Vega.” The “Willem Barents” met with it in 
1880 near the locality of the Tegetthof dredging. Fielden’s speci- 
mens were well and carefully described by Sladen,* who identified 
them with that dredged by the “ Tegetthof,” so far as he could 
judge from von Marenzeller’s description of the latter. Thanks to 
the kindness of Dr von Marenzeller, I have been enabled to examine 
his type for myself, and I am satisfied that S laden was right in 
identifying it with those dredged by the “ Alert.” After writing 
his description of them Sladen saw for the first time some examples 
of Ant. eeltiea, Barrett sp., and recognising that these were totally 
different from the Arctic specimens, he inserted a note to that effect, 
but did not rename the latter. 
Barrett’s type now turns out to be the long but little known 
Antedon phalangium of the Mediterranean ; and the specific desig- 
nation eeltiea being therefore unoccupied, I thought at first that it 
might conveniently be retained for the type described under this 
name by von Marenzeller and Sladen respectively.! This, however, 
has seemed undesirable for many reasons ; and in compliance with 
the wishes of both the above named naturalists, I propose to give 
it a new name altogether. I have, therefore, chosen one indicative 
of the character by which the species is most easily distinguished 
from Ant. esehriehti, viz., the markedly quadrate shape of the middle 
and outer arm-joints, as has been noted above among the “ special 
marks ” of Ant. quadrata. 
* A Memoir on the Ecliinodennata of the Arctic Sea to the IVest of Greenland i 
London, 1881, p. 75, pi. vi. tigs. 5, 6. 
t “Note on the European Comatidacf Zool. Anzeiger, Jahrg. iv; p. 520. 
