175 



hard bottom, one individual (Packard). Dead Island, near Square Island, 

 Labrador, 1 to 4 fathoms, mud, "a few good though dead specimens," 

 Stearns expedition (Miss Bush). 



Fossil in the Pleistocene of Riviere du Loup and Labrador (Sir J. W. 

 Dawson). 



Family Trichotropidce. 



Tbichotropis borealis, Broderip and Sowerby. 



Grand Manan, " rarely taken alive though dead shells are not uncommon 

 in the coralline zone" (Stimpson). Fishing banks off Halifax (Willis) ; 

 Halifax Harbour (J. M. Jones) ; Le Have Bank, N.S., in 45 fathoms, 

 abundant, U. S. Fish Commission, 1872 (Smith and Harger). Gulf and 

 mouth of the River St. Lawrence, off Grande Greve, Gaspe Bay, in 30 to 40 

 fathoms, and elsewhere (Whiteaves) ; Little Metis and Murray Bay (Sir 

 J. W. Dawson) ; St. Anne and near Cap Chatte (Bell) ; off Caribou Island, 

 frequent in 10 to 50 fathoms (Packard. Atlantic coast of Labrador, at Lono- 

 Island, 15 fathoms, and Hopedale, in 10 fathoms (Packard). Strait of Belle 

 Isle, at L'Anse au Loup, 10 fathoms ; Atlantic coast of Labrador, at Henley 

 Harbour, 3 to 15 fathoms; Temple Bay, 10 fathoms; Dead Island, near 

 Square Island, 2-4 fathoms ; Stearns' expedition (Miss Bush) ; Greenland 

 (Mtiller, as T. Atlantica, Beck) ; Ashe Inlet and Port Burwel], Hudson 

 Strait (Bell). 



Fossil at Riviere du Loup, Chaudiere Station, Montreal, Labrador, etc. 

 Very abundant at Montreal (Sir J. W. Dawson). 



Trichotropis coxica, (Beck) M.oller. 



1842. Index Molluscorum Groenlandice, p. 12. 



" A single dead but large and characteristic specimen of this very distinct 

 species was taken in the Gulf of Maine, off Cape Sable, Nova Scotia, by the 

 U. S. Fish Commission party on the Speedwell in 1877 " *(VerriIl). 



Family Cerithiidce. 

 BiTTiUxM NIGRUM (Totten). 



Pasithca nigra, Totten (1834). 



Ce.rithium reticulatuvi, Totton (1835) ; non Da Costa. 



Ccrithium Sayii, Menke (1841). 



Bittium nigrum, Stimpson (1860). 



Halifax (Willis); whole Atlantic coast of Nova Scotia (J. M. Jones); on 

 eel grass, Pictou, and south shore of Prince Edward Island (Sir J. W. 



* Transactions of the Connecticut Academy of Arts and Sciences, vol. v., p. 51'J. 



