THE MOUNT DESERT EEGION" 181 



Pectinidae 

 Pecten 0. F. Miiller 



P. (Chlamys) islandicus (Miiller). Miiller, 1776, Zool. 

 Danicae, Prodr. ; Chlamys islandicus Verrill, 1897, Trans. 

 Conn. Acad., vol. 10, p. 72, pi. 16, figs. 2-5b; pi. 20, fig. 9; pi. 

 21, fig. 2.) Only small specimens found and but in 2 places 

 on hard bottom. Stations : D 36, 40. Reported from East- 

 port, Casco Bay, Marthas Vineyard, Georges Bank, Ston- 

 nington, Conn.; from Gulf of St. Lawrence, Hudson Bay 

 Strait, and various other Canadian localities. A Canadian 

 fossil form. 



P. (Placopecten) magellanicus (Gmelin). {Ostrea magel- 

 lanica Gmelin, 1790, Syst. Nat. ; P. tenuicostatus Mighels and 

 Adams, 1842, Boston Jour. Nat. Hist.; P. fuscus Linsley, 

 1845, Amer. Jour. Sci. ; P. tenuicostatus Gould, 1870, Inv. 

 Mass., p. 196, fig. 494; P. cUntonius Verrill, 1884, Trans. Conn. 

 Acad.; P. {Placopecten) magellanicus Dall, 1898, Wagner 

 Free Inst. Sci.) This is the giant scollop of commerce, and 

 occurs in places in large beds. One of them was recently 

 located just inside of Bald Porcupine. Found from the outer 

 Bay to estuaries. Occurs some distance up the Skillings River. 

 Favorite bottom gravel, clay, and broken shells. Stations: 

 D 15, 18, 38, 67. Beds frequently occur in the western Bay. Re- 

 ported from whole New England coast and southward, 

 Passamaquoddy Bay, Gulf of St. Lawrence. The most north- 

 ern locality of record is the north shore of the Gulf just inside 

 the Strait of Belle Isle. A fossil form of Canada. 



Anomiidae 



Anomia Linne 



A. ACULEATA (Miiller). (Miiller, 1776, Zool. Danicae Prodr., 

 p. 249; Gould, 1870, Inv. Mass., p. 204, fig. 498.) Very com- 

 mon on stones and shells at low water and in the Bay. Re- 

 ported from Casco Bay and northward, off Gay Head, off 

 Stonington; widely distributed in Gulf of St. Lawrence at 

 depths of less than 100 fathoms. 



