[693] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 399 



Island Sound, Buzzard s Bay, Vineyard Sound, Massachusetts Bay, 

 Casco Bay, Bay of Fundy (littoral to 50 fathoms), and northward. Fort 

 Macon, North Carolina (Coues), 



Fossil in the Post-Pliocene of Greenland, Labrador, Canada, Lake 

 Champlain, Maine, New Brunswick, Point Shirley, Massachusetts, 

 and Saint John s River, Florida ; in the Post-Pliocene of Scandinavia, 

 Bussia, and Great Britain 5 in the Bed Crag and all later formations in 

 England. 



MODIOLA MODIOLTJS Turton. Plate XXXI, fig. 237. (p. 309.) 



British Bivalves, p. 199, Plate 15, fig. 3, 1822; Gould, Invert., ed. i, p. 123; eel. 

 ii, p. 186, fig. 485 ; Dekay, op. cit., p. 185, Plate 24, fig. 257. Mytilns modiolus 

 Linne&quot;, Syst. Nat., ed. xii, p. 1158. (f)Modiola papuana Lamarck, Anim.sans 

 Vert., ed. ii, vol. vii, p. 17 ; Say, Amer. Conch., Plate 45. 



Circumpolar : Greenland southward to New Jersey ; on the European 

 coast from Spitsbergen southward to Great Britain and France ; in the 

 North Pacific southward to Monterey, California, on the American 

 coast ; and southward to Northern Japan on the Asiatic coast. Long 

 Island Sound, not very common ; Vineyard Sound and Buzzard s Bay, 

 not abundant 5 common in Massachusetts Bay ; abundant in Casco Bay 

 and Bay of Fundy, low-water to 80 fathoms. Stateu Island and Long 

 Island (S. Smith). Fossil in the Post-Pliocene of Point Shirley, Massa 

 chusetts, Montreal, Canada, Scotland, Ireland, Sicily, etc. ; in the Cor- 

 aliue Crag, Bed Crag, and later formations in England. 



MODIOLA PLICATULA Lamarck. Plate XXXI, fig. 238. (p. 307.) 



Anim. sans Vert., ed. i, 1819 ; ed. ii, vol. vii, p. 22 ; Gould, ed. i, p. 125, fig. 81 ; ed. ii, 

 p. 188, fig. 486 ; Dekay, op. cit., p. 184, Plate 14, fig. 253 ; Hauley, Recent Shells, 

 p. 240. Mytilns plicatus Deshayes, Encyclop. Meth., Plate 220, fig. 5 ; Stimpsou, 

 Shells of New England, p. 12. Modiola semicosta Conrad, Jonr. Acad. Nat. Sci., 

 Philad., vol. vii, p. 244, Plate 20, fig. 7, (t. Gould). Mytilus demissus Dillyn, 

 Catal. Recent Shells, vol. i, p. 314 ft. Gould). Braoliydonies plicatiilus H. and 

 A. Adams, Genera, vol. ii, p. 517 ; Perkins, op. cit., p. 156. 



Georgia, to Casco Bay, Maine ; more rare and local farther north ; 

 in the southern part of the Gulf of Saint Lawrence, and on the coast of 

 Nova Scotia ; nor observed on the coast of Maine east of the Kennebeck 

 Eiver, nor in the Bay of Fundy. Very abundant at Egg Harbor, New 

 Jersey, Long Island Sound, Buzzard s Bay, and Vineyard Sound ; less 

 abundant in Massachusetts Bay, near Salem, Massachusetts, etc.; local in 

 sheltered muddy coves about Casco Bay and Quahog Bay, Maine. Mouth 

 of the Kennebeck Eiver (C. B. Fuller). Prince Edward s Island (Daw- 

 son). Nova Scotia (Willis). Fort Macon, North Carolina (Coues). 

 Georgia (Couper). 



MODIOLA IIAMATUS Yerrill. (pp. 374. 475.) 



American Journ. Science, vol. iii, p. 211, Plate 7, fig. 3, 1872. Mylihis hamatns 

 Say, Journ. Acad. Nat. Sci., Philadelphia, vol. ii, p. 265, 1822; American Con- 

 chology, Plate 50; Binney s Say, pp. 91, 204, Plate 50. Aulacomya Jiamatus 

 Adams, Genera, vol. ii, p. 513. Bracliydontes hamatus Perkins, op. cit., p. 156, 1869. 



Long Island Sound to Florida, and the shores of the Gulf of Mexico 



