THE ECOIs'OMIC MOLLUSCA OF ACADIA. 97 



Distribution. (a) General; — Low-water mark to tea 

 fathoms or more. Cape Cod to Labrador. 



(b) 111 Acadia; — (in N. B.) Grand Manan, common in 

 sand at low water, buried at a depth of four inches, Stimpson, 

 Verrill. (In N. S.) Annapolis Basin, St. Mary's Bay, rare, 

 VerTcruzen. Chester, Lunenburg, Mahone Bay, River John, 

 Willis. Not reported from Prince Edward Island. Having 

 been reported from so few places, it is impossible to state its 

 distribution on our coasts. 



Habits. Similar to the last species, M. solidissima, in habits, and 

 very like it in appearance. It is smaller, rarely exceeding four inches 

 in length, but it is never distinguished from it by fishermen. The chief 

 mark by which M. solidissima may be separated from it, is the presence 

 of striations on the long hinge teeth, M. ovalis having none of these. It 

 is much less common tlian M. solidissima, and is a more northern shell. 



Economics. Probably it can be used for the same purposes 

 as M. solidissima, though its smaller size and greater scarcity 

 must render it less valuable. Mr. "Willis says, referring to 

 this species, that it "sometimes finds its way to Halifax 

 market, and is readily disposed of." 



23, Mya arenaria Linnaeus. 



Clam, Soft Clam, Long Clam, Sand Clam. 



Mic-mac, Aas-uk. Passamaquoddy, Ess-sook (or 

 Hess.) Acadian French, Cocque, 



\.Mya, perhaps mus of the ancients; arenaria, living in sand]. 



Distribution. {a) General; — Between tide-marks to 

 more than one hundred fathoms. South Carolina to the 

 Arctic Ocean, Northern Europe and south to England and 

 France. Northeastern coast of Asia to China and Japan. 

 Sitka, Alaska. 



(Z>) In Acadia; — (in N. B.) Abundant everywhere in sand 



and mud on the southern coast from Grand Manan to St. 



John and probably much further. Bay Chaleur, Bell. Shediac, 



Whiteaves. (In N. S.) Annapolis Basin and Bay of Fundy, 



•common, Verh'uzen. Halifax Harbour, etc., very common, 



