24 



Trophon clathratus (Linne). 



Fusus scalariformis, Gould, 1841. 

 Tritonium scalar! forme, Stimpson, 1851. 

 Trophon scalariformis, Gould, 1870. 



Casco Bay (Mighels, Fuller, Kingsley) ; East and 

 / West Cod Ledges off Cape Elizabeth fVerrill). 



V Trophon clathratus var. gunneri, Loven. 



Off Grand Manan and off Cape Sable, 59 fath. 

 (Verrill). 



V Purpura lapillus (Linne). 



Very abundant everywhere, on ledges and rocks, 

 between tides. 

 1/ Purpura lapillus var. imbricata, Lamarck. 



Found in company with the type, but less numerous. 



V Columbella (Anachis) avara (Say), 1822. 



Casco Bay, stomach of a haddock (Mighels). 

 Columbella (Anachis) haliseti (Jeffreys). 

 Anachis costulata, Verrill. 



/Gulf of Maine, Cashes Ledge, Jeffreys Bank, etc., 30 

 to 114 fath. (Verrill). 

 Columbella (Astyris) rosacea, Stimpson. 

 Buccinum rosaceum, Mighels, 1843. 

 ^ Whole coast of Maine. 



^ Columbella (Astyris) dissimilis, Stimpson, 1851. 

 Astyris zonalis, Verrill, 1873. 

 , Whole coast of Maine. 



V Nassa trivittata. Say, 1821. 



Buccinum trivittatum, Adams, 1838. 

 Whole coast of Maine. 

 L< Nassa obsoleta. Say, 1821. 



Buccinum obsoletum, Gould, 1841. 

 Ilyanassa obsoleta, Stimpson, 1865. 



Very common all along the coast in coves and inlets, 

 on muddy flats between tides and at low-water mark. 

 ^ Buccinum undatum, Linne. 

 (Whelk or sea snail.) 



Very abundant all along the coast, on rocky bottoms, 

 from low-water mark to 50 or more fathoms. 



