642 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. 



of CascoBaj^, especially at the upper end of Quahog Bay, but has not 

 been found on the islands, nor farther eastward along the coast of 

 Maine, nor in the Bay of Fundy. A colony exists, however, in the 

 southern part of the Gulf of Saint Lawrence, associated with the pre- 

 ceding and other southern species. It is found fossil in the Post-Plio- 

 cene of Point Shirley, Massachusetts, Nantucket, Gardiner's Island, 

 Yirginia, North Carolina, and South Carolina 5 in the Pliocene of South 

 Carolina; and in the Miocene of Maryland. 



EuPLEURA GAUD ATA H. and A. Adams. Plate XXI, fig. 117. (p. 371.) 



Genera of Recent Mollusca, vol. i, p. 107, 1858 ; Stimpson, Amer. Journal of 

 Conchology, vol. 1, p. 58, Plate 8, fig. 5 (dentition), 1885. Eanella caudata Say, 

 Journal Acad. Nat. Sciences, Philadelphia, vol. ii, p. 236, 1822 ; Gould, Invert, 

 of Mass., ed. i, p. 297, fig. 176 ; ed. ii, p. 386, fig. 648. 



Eastern coast of the United States ; northward to Nantucket and Cape 

 Cod 5 southward to northern Florida, and western Florida, at Tampa 

 Bay. At Vineyard Sound it occurred living in considerable numbers in 

 the shallow ditches on the marshes, as well as in the sound itself, in 1 

 to 8 fathoms J oii Kew Haven, in 1 to 5 fathoms, not abundant ; Great 

 Egg Harbor, frequent among eel-grass in shallow water. Egmont Key, 

 Florida (Jewett). 



In the fossil state this species has been found in the Post-Pliocene of 

 Yirginia, North and South Carolina, and Florida; in the Pliocene of 

 South Carolina 3 and in the Miocene of Maryland and South Carolina. 



Purpura lapillus Lamarck. Plate XXI, figs. 118 to 120. (p. 306.) 



Anim. sans Vert., ed. i, vol. vi, 1822; ed. ii, vol. x, p. 79; Gould, Invert, of 

 Mass., ed. i, p. 301 ; ed. ii, p. 360, fig. 630. Buccinum lapillus Liuu^, Sjst. 

 NatursB, ed. xii, p. 1202, 1767. 



Watch Hill, Ehode Island ; Montauk Point, Long Island ; Cuttyhunk 

 Island; shores of Vineyard Sound, at Nobsca Point; northward to the 

 Arctic Ocean. On the European coast southward to Portugal. North- 

 eastern coast of Asia. Sitka (Middendorff). This species is local south 

 of Cape Cod, and has not been found to the eastward of Stouington, Con. 

 necticut, in Long Island Sound. It is extremely abundant along the 

 northern coasts of New England and Nova Scotia, often nearly cover- 

 ing the surface of the rocks toward low-water mark, where they are en. 

 crusted by Balanus balanoides, upon which it chiefl^^ feeds, inserting its 

 proboscis between the opercular valves of the barnacle. 



This shell has been found in the Post-Pliocene deposits at Waterville, 

 Maine, and at Gardiner's Island, but is not a common fossil in this 

 country. In England it is found in the Red-Crag and all later forma- 

 tions ; it alsD occurs in the Post-Pliocene deposits of Scandinavia. The 

 fossils vshow the same variations that are seen in the recent shells. 



PTYCnATRACTUS LIGATUS StimpSOU. 



American Journal of Concliolo^y, vol. i, p, r)9, plate 8, f\g. 8 (d(Mitition), 1855. 

 Fasciolaria liyata Mighels and Adams, Boston Journal of Nat. History, vol. iv, 

 p. 51, Plate 4, fig. 17, 184 i; Gould, Invert, of Mass., oJ. ii, p. 385, fig. 647. 



Oasco Bay, Maine, to Labrador. Stoniugton, Connecticut (Linsley). 



