157 



Family Scissurellidce. 



ScissuRELLA CRISPATA, Fleming. 



Off Caribou Island, P.Q., 1860 (Packard) ; detected (with MoUeria costu- 

 lata) by Sir J. W. Dawson in sand examined for foraminifera. The Scis- 

 surella is now known to range from New England to Greenland in from 4- 

 790 fathoms, but the writer has never seen a specimen of it from the western 

 side of the Atlantic. 



Family Trochidce. 



MOLLERIA COSTULATA (JVloller). 



Margarita costnlata, Moller (1842). 

 Adeorbis costulata, Stiinpson (1851). 

 MoUeria costulata, Jeffreys (1865). 



Grand Manan, off Nantucket Island, 4 fathoms, coarse sand, dead 

 specimens, and in deep water off Cape Ann (Stimpson). Gaspe Bay (Whi- 

 teaves) ; Marsouin (Bell); Mingan (J. Richardson, jun.) ; near Caribou 

 Island (Packard). 



" Fossil— Montreal ; Clyde beds ; Uddevalla " (Sir J. W. Dawson.) 



Margarita helicina (Fabricius). 



Turbo helicinus, O. Fabricius (1780). 

 Margarita arctica. Leach (1819) ; and Gould (1841). 

 Margarita helicina, Moller (1842) ; et auct. 

 Margarita campanulata, Morse (1866). 



Grand Manan, " common on the marine plants which cover the rocks 

 above low-water mark. It is particularly abundant on the Long Island 

 shore " (Stimpson) ; Annapolis Basin, N.S., "moderately abundant " (Ver- 

 kruzen). " Halifax Harbour, common" (Willis). River and Gulf of St. 

 Lawrence, near low water mark, at many localities, where it has been col- 

 lected by Sir J. W. Dawson, Bell, Verrill, the writer and others. In 

 Hudson Strait it has been collected at Ashe Inlet by J. W. Tyrrell in 1885 ; 

 off Nottingham Island (dredged clinging to kelp and of large size) by J. 

 McKenzie in 1886 ; and between King George Sound and the bottom of 

 Ungava Bay by A. P. Low, in the SS. Diana, in 1897. 



"Fos.sil—Murray Bav ; Montreal" (Sir J. W. Dawson). 



