145 



Ltonsia arenosa (Moller). 



Paruloriim arenosa, Moller (1842). 



Ljioiisia {Pandorina) arenosa, Morch (1857). 



A Greenland shell that Verkruzen collected in Annapolis Basin ; that 

 Willis says is rare on the fishing banks ofl Halifax; and that J. Matthew Jones 

 records as occurring in Halifax Harbour. Specimens of it have been dredged in 

 Gaspt^ Bay in 30 to 60 fathoms, by the writer ; at Little Metis, Riviere du 

 Loup and Murray Bay, by Sir J. W. Dawson ; at Ste. Anne, by Bell (who 

 identified his specimens with Osteodesma hyalinum) ; and near Caribou 

 Island, in 15 fathoms sand, by Packard. 



The outer surface of the valves of young and living specimens is covered 

 with a layer of fine sand, but the woodcut on page 66 of the second edition 

 of Gould's Invertebrata of Massachusetts does not give a very good idea of 

 this shell, some specimens of which are fully an inch in length. 



According to Sir J. W. Dawson, L. arenosa has been found fossil in the 

 Leda clay of Saco, Maine; of Duck Cove, N.B.; of Riviere du Loup and 

 Montreal, P.Q. ; and in post-tertiary deposits in Greenland. 



Lyonsia hyalina, Conrad. 



Mya hyalina, Conrad (1831). 



Lt/onsia hyalina, Conrad (1831) ; and Gould (1870). 



Osteodesma hyalina, Couthouy (1839). 



Grand Manan, 10 fathoms sand, off Cheney's Head (Stimpson) ; Bay of 

 Fundy, low-water mark to 30 fathoms (Verrill). 



Family Atiatinidce. 

 Periploma fragilis (Totten). 



Anatina fragilis, Totten (1835). 



Anatina. papyracea, Gould (1841 and 1870) ; non Say, teste Dall. 



Pcriploma papyracea, Verrill (1872). 



Periploma fragilis (Corirad) Dall. 



Sable Island (Willis) ; " not uncommon in Massachusetts Bay, Casco 

 Bay and Bay of Fundy, 10 to 100 fathoms" (Verrill). Gaspe Bay, in 40 

 fathoms mud, — and off Egg Island (on the north shore of the Gulf of St. 

 Lawrence, between Trinity and Seven Island bays) in 70-80 fathoms sandy 

 mud " ( Whiteaves) ; off Anticosti Island (Verrill) ; and Chateau Bay, 

 Labrador, in 15 fathoms, sandy bottom (Packard). 

 10 



