T H E
ZOOLOGY
VOYAGE OF H.M.S. EREBUS & TERROR
UNDER THE COMMAND OE CAPTAIN SIR JAMES CLARK ROSS, R.N., P.R.S.,
D U R I N G T H E Y E A R S
1 8 3 9 TO 1 8 4 3 .
B Y AUTHORITY OF THE LORDS COMMISSIONERS OF THE ADMIRALTY
E D I T E D B Y
JO H N EICH A EDSO N , M.D., F.E.S., &o.;
JO H N EDWARD GRAY, E s q . , P h.D., F.E.S., &c.
MOLLUSCA.
BY
EDGAR A. SMITH, F.Z.S., Zoological Dlpautment, Beitish Musbgm.
L O N D O N :
E. W. J A N S O N , 28. M U S E U M S T R E E T , W .C .
M.DCCC.LXXIV.
