146 



CoCHLODESMA Leanum (Conrad). 



AnafinaLeana, Conrad (1831). 



Cochlodesma Leanum, Couthouy (1839) ; et auct. 



Fishing banks oif Halifax, scarce (Willis) ; off Douglastown, Gaspe Bay, 

 one dead but fresh valve collected by the writer in 1869. 



Thracia Coneadi, Couthouv. 



Thracia dcclivis, Conrad (1831) ; non Pennant. 

 Thracia Conradi, Couthouy (1839) ; et auct. 



Grand Manan (Stimpson) ; Bliss Harbour, N.B. (Ganong). Off Pictou 

 Island, N.S., in 12 fathoms (alive) ; Pointe du Chene, Shediac Bay (dead 

 and empty but large and perfect shells, thrown up on or near the beach by 

 a storm) ; and off Grande Greve, Gaspe Bay, (Whiteaves). One small speci- 

 men was dredged off Caribou Island (Packai-d). 



This species, Verrill says, " burrows so deeply in the mud or sand, that it 

 is seldom taken alive in the dredge." 



"o^ 



Thracia myopsis (Beck) Moller. 



Thracia myopsis, (Beck) Moller (1842) ; et auct. 

 Thracia CouthoKi/i, Stimpson (18.51). 



Grand Manan Stimpson) ; Halifax Harbour (Smith and Harger) ; off 

 Grand Greve, Gaspe Bay, in 50 fathoms mud (Whiteaves) ; Salmon Bay (on 

 the north shore of the Gulf, just inside of the Strait of Belle Isle) in 10 

 fathoms mud ("a tine large specimen"), and Long Island (Sandwich Bay, 

 Labrador) in 15 fathoms sand (Packard) ; Greenland (Moller). 



The late Dr. J. Gwyn Jeffreys was of the opinion that this shell is the 

 Amphidesma truncatum, Brown (Illustr. Conch. Gt. Britain, 1827) and that 

 it should be called Thracia truncata (Brown). G. O. Sars, in his MoUusca 

 Regionis Arcticpe Norvegicfe, published in 1878, adopts this view, and 

 regards T. myopsis as a synon^^m of T. trtmcata. 



Thracia truncata, Mighels and Adams. 



Thracia truncata, Mighels and AdaniH (1842); and Gould (1870). 



Grand Manan, "in 10 fathoms coarse sand off Cheney's Head" (Stimp- 

 son) ; Bay of Fundy (Verrill) ; fishing banks off Halifax, scarce (Willis) ; 

 Greenland, in 60 fathoms (Morch). 



Dr. Jeffreys has suggested that as the specific name given to this shell by 

 Mighels and Adams is preoccupied, it should be changed to 7'. septentrional is. 



