196 BIOLOGICAL SURVEY OF 



Trochidae 



Margarites Leach 



M, cixEEEA (Couthouy). {Turbo cinereus Couthouy, 1838, 

 Boston Jour. Nat. Hist. ; Margarita cinerea Gould, 1870, Inv. 

 Mass., p. 279, fig. 539.) Found with the others. Stations: 

 D 14, 23, 24, 36, 38, 100, 106. Reported from West Isles near 

 Eastport, Casco Bay, from fish caught in Massachusetts Bay. 

 Various places to Greenland. 



M. OLIVACEA (Brown). (Turbo olivaceus Brown, 1827, II- 

 lustr. Conch.; Margarita argentata Gould, 1870, Inv. Mass., 

 p. 282, fig. 544.) Blaney reports as rare. We did not take it. 

 Reported from Eastport, Casco Bay, off Cape Ann and Co- 

 hasset. Gulf of St. Lawrence, Gaspe Bay. 



M. HELiciNA (Phipps). {Turbo helicinus Phipps, 1770, Voy- 

 age toward the North Pole; Margarita arctica Gould, 1841, 

 Inv. Mass. ; Margarita helicina Gould, 1870, Inv. Mass., p. 281, 

 fig. 542.) A common form of the tide pools. There is con- 

 siderable variation in shape between sexes. Reported from 

 Eastport, Casco Bay, Duxbury, Plymouth, Gulf of St. Law- 

 rence, Hudson Strait, Ungava Bay. 



M. GROENLANDiCA (Gmcliu). {Trocus groenlandicus Gmelin, 

 1790, Syst. Nat. ; Margarita undulata Gould, 1870, Inv. Mass., 

 p. 280, 'fig. 541.) Fairly common. Stations: D 87, 94, 125. 

 Found in pools on Bald Rock and Long Porcupine. Reported 

 from Eastport, Casco Bay, Massachusetts Bay, up to Atlantic 

 coast of Labrador. 



MoLLERiA Jeffreys 

 M. cosTULATA (MoUcr). {Margarita costulata Moller, 1842, 

 Kr0yer's Naturh. Tidskr. ; Adeorbis costulata Gould, 1870, 

 Inv. Mass., p. 278, fig. 538.) Rather rare. Stations: D 74, 

 94, 95. Reported from Eastport, off Cape Ann, Nantucket, 

 Grand Manan, Gaspe Bay. 



SOLARIELLA S. Wood 



S. OBSCURA (Couthouy). {Turbo obscurus Couthouy, 1838, 

 Boston Jour. Nat. Hist. ; Margarita obscura Gould, 1870, Inv. 



