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BULLETIN OF THE NATURAL HISTORY SOCIETY. 
Habits. This is the Scallop which is of so much importance in the- 
United States markets. As it is so rare in Acadia, indeed hardly coming 
within the limits of this paper at all, it is not thought best to describe it 
in detail. When found, it may be distinguished from our two Scallops 
described above, by the coarse radiating ribs, about twenty in number, 
and the nearly equal “ears” or lateral projections from the shell, 
forming the hinge. Its habits resemble those of P. tenuicostatus, described 
above. It is possible that it may be found in the Gulf of St. Lawrence 
along with the southern shells there, and if not, it is extremely probable 
that it would flourish there if introduced. Indeed, as mentioned under 
the last species, a Scallop having a “large ribbed shell and serrated 
edge,” has been described as living on the shores of Prince Edward 
Island. It may be not improbably this species. 
Economics. Its use to man may be best described in 
connection with our native Scallop, as both are available for 
the same purposes. 
14. Mytilus edulis Linnaeus. 
Edible Mussel, Black Mussel, Sea Mussel. 
Mic-mac , Angadaalow, pi. Angadaalak. Passama- 
quoddy , Sah tah sis ik. 
[Mytilus, the ancient Greek name; edulis, edible.] 
Distribution, (a) General ; — Littoral zone to more than 
one hundred fathoms. North Carolina to Arctic Ocean and 
circumpolar. On European coast, southward to Mediterranean 
and Black Sea; on Asiatic coast to China and Japan; on 
Western American coast to California. 
( b ) In Acadia; — (in N. B.) Exceedingly abundant every- 
where on the southern coast from Grand Manan to St. John, 
and probably much further. Bay Chaleur, Bell. Shediac r 
Whiteaves. (In N. S.) Annapolis Basin and Digby Gut,, 
common, Verkruzen. Whole coast, Jones . Prince Edward 
Island, Dawson. Very abundant everywhere on the coast of 
Acadia. 
Habits. Without doubt, this is the most common and abundant 
Mollusc on the coast of Acadia. There is probably not a mile of shore 
on our whole coast line which is without it, and everybody who visits- 
