A MEMOIR
THE ECHINODERMATA
OF THE
ARCTIC SEA TO THE WEST OE GREENLAW).
BY
P. M A R T IN DUNCAN, M.B. (Loot.), F.B.S., F.G.S., F.L.S.,
Hon. F ellow King’s College, London, Cobrbspondent oe the Academe of Natural Sciences op
P hiladelphia, U. S .;
AND
W. PERCY SLADEN, F.G.S., F.L.S., &c.
*
LONDO N :
JOHN VAN VOORST, 1 PATERNOSTER ROW, E.C.
MDCCCLXXXI.