Myriozoum sub-gracile, D'Orbigny. Fossil-Rivière-du-Loup. Recent Labrador (Packard); Gaspé. Idmonea atlantica, Forbes. Fossil-Rivière-du-Loup. Recent I believe this to be identical with a species found in the Gulf of St. Lawrence, and referred by Dr. Packard and Mr. Whiteaves to the above. Crisia eburnea, Ellis. Fossil-Montreal. A specimen collected by Mr.. Curry is referred to this species by Mr. Whiteaves. Recent Labrador (Packard). In 96 fathoms, Trinity Bay, N. Shore St. Lawrence R. J. F. W. Alecto, sp. Fossil-Rivière-du-Loup. Membranipora Lacroixii, Busk. Fossil-Rivière-du-Loup. Recent Gaspé; Labrador (Packard). Entirely agrees with recent examples from Gulf of St. Lawrence. One of the six forms referred by Smitt to M. lineata Linn. (J. F. W.) Membranipora lineata, Linn. Discoporella hispida, Johnston. Fossil-Rivière-du-Loup. Patches on shells, somewhat worn, but referable to this common North Atlantic species. Sub-Class II.-Brachiopoda. Rhynchonella psittacea, Gm. Fossil-Montreal; Beauport; Rivière-du-Loup. Abundant. Recent Murray Bay and Gaspé. Abundant. Labrador (Packard); Gulf St. Lawrence. Generally on stony bottoms 10 fathoms and over. Arctic seas generally; also Crag of England and glacial beds. In a bed of stony clay at Riviére-du-Loup, this shell is very abundant, with less abundant specimens of the next species. It occurs living in precisely the same relations and in great abundance at Murray Bay, in about 20 fathoms. Terebratella Spitzbergensis, Davidson. Fossil-Rivière-du-Loup. Recent Murray Bay; also deeper parts of Gulf of St. Lawrence (Whiteaves); Nova Scotia (Willis). This species has been found in the Post-pliocene of Canada, hitherto only at Rivière-du-Loup, and is rare. It was called T. Labradorensis, Sowerby, in former lists, which seems to be a synonym. It appears to be a rare shell in every part of the Gulf where it has hitherto occurred, except at Murray Bay, where it is not uncommon, and is found attached to stones in 20 to 25 fathoms, associated with Rhynchonella psittacea. CLASS II.-LAMELLIBRANCHIATA. Pholas (Zirphea) crispata, Linn. Fossil-Maine (Packard). I have not found this species fossil in Canada, but it exists as a living shell on the New England coast generally, in Northumberland Strait; Gulf of St. Lawrence, and according to Bell as far to the north-west as Rimouski. Puget Sound (U. S. Expl. Exped.) It has perhaps extended its northern limit to Canada since the glacial period. On the European coast it is a northern shell, reaching south to the Mediterranean. Saxicava rugosa, Linn (and var. Arctica). Fossil-Saxicava sand and top of Leda clay, Montreal; St. Nicholas; Ottawa; Quebec; Murray Bay; Rivière-du-Loup; Trois Pistoles; Tadousac; Labrador; Lawlor's Lake, New Brunswick; Maine, &c. Recent Gulf St. Lawrence; coast of Nova Scotia; and New England and northern seas generally; also west coast of America as far as Mazatlan. (P. P. Carpenter). Very abundant in the more shallow portions of the Post-pliocene throughout Canada, and presenting all the numerous varietal forms of the species in great perfection. It is relatively much more abundant in the drift deposits than in the Gulf of St. Lawrence at present. Pieces of limestone which have been bored probably by this shell, are not rare in the drift at Montreal. This is a widely distributed Arctic species, and is found in the Post-pliocene deposits of Europe, and as far back as the Miocene. Panopoa Norvegica, Spengler. Fossil-Leda clay; Rivière-du-Loup. Very rare. Recent Dredged in Gaspé Bay, 30 and 40 fathoms, by Mr. Whiteaves; Halifax (Willis); Grand Manan (Stimpson); Arctic and northern seas generally. It is very rare in the Post-pliocene, a few valves only having been found at Rivière-du-Loup. The specimens are small, and much inferior to those found in the Scottish Clyde beds, of which I have a specimen from Rev. H. Crosskey. Mya truncata, Linn. (and var. Uddevallensis). Fossil-Saxicava sand and Leda clay; Montreal; Quebec; Rivière-du-Loup; Portland; New Brunswick (Matthew); Labrador (Packard); Greenland (Möller); also in the Post-pliocene of Europe. Recent Gulf St. Lawrence, but rare in comparison with its abundance in the drift. Generally distributed in the Arctic seas and North Atlantic, American coast as far south as Cape Cod; Puget Sound (= preciosa, Gould, P. P. C.) The variety found in the Post-pliocene of Canada is the short or Uddevallensis variety, which is that occurring in the Arctic seas at present, while in the Gulf St. Lawrence the ordinary long variety is found almost exclusively. At Portland, Maine, however, the long variety lived in the Post-pliocene, and occasional specimens are found at Rivière-du-Loup. The form Uddevall ensis occurs living in Labrador (Packard), and I have found it at Tadousac. It is interesting to observe that while the present species is more abundant than the next in the Post-pliocene, it is much more rare in the Gulf at present. It also occurs in deeper water. Mya arenaria, Linn. Fossil-Leda clay and lower part of Saxicava sand; Montreal; Upton; Quebec; Murray Bay; Labrador; Duck cove and Lawlor's lake, New Brunswick; Portland, Maine; Greenland (Möller); also in the Post-pliocene of Europe. Recent Very abundant throughout the Gulf St. Lawrence and coast of Nova Scotia and New England, also Arctic seas generally. Mr. Jeffreys considers it identical with M. Japonica, Jay. Not found yet in W. America. (P. P. C.) In the Gulf this species grows to a large size; I have a specimen five inches long from Gaspé; but in the Post-pliocene it is small and often of a short and rounded variety. This is especially the case inland, as at Montreal. At Rivière-du-Loup a small thin variety with a strong epidermis and attenuated posteriorly, is found in situ in its burrows in the Leda clay. It may be a deep-water variety. Some large specimens in collections from this place, I have reason to believe are from Kitchen-middens and not fossils. Kennerlia glacialis, Leach. Fossil-Leda clay; St. John, New Brunswick; Saco, Maine. Recent Gaspé (Whiteaves); Murray Bay; Labrador (Packard). This species, which was at first confounded with Pandora trilineata by Dr. Packard, is evidently quite distinct, and on the evidence of the hinge would belong to a different genus. Much nearer to Pandora pinna, Mont. ; = P. obtusa Forbes and Hanley. J. F. W. Lyonsia (Pandorina) arenosa, Möller. Fossil-Leda clay; Montreal (rare and small); Rivière-duLoup, common; Duck Cove, N. B.; Saco, Maine; also in Greenland (Möller). Recent Murray Bay and Gaspé; Halifax (Willis); Greenland (Möller); Labrador (Packard). Some specimens from Portland are much larger than those from Rivière-du-Loup and Montreal, and Mr. Whiteaves finds individuals an inch long, living at Gaspé. Thracia Conradi, Couthuoy. Fossil-Saco (Packard). Not yet found fossil in Canada, but recent, though rare, in Nova Scotia (Willis); and at Gaspé. Also, though apparently rare, at Labrador (Packard). Has probably extended its northern limit to Canada, since the glacial period. Macoma Granlandica, Beck. Fossil Saxicava sand and Leda clay; Montreal; Ottawa; Perth, Ont.; Pakenham Mills, Cornwall; Clarenceville; Upton; Quebec; Murray Bay; Rivière-du-Loup; Labrador; Lawlor's lake, N.B.; Campbellton, P. E. I.; Westbeach, Maine; Greenland (Möller). Recent Everywhere on the coasts of the Gulf and River St. Lawrence, as a common littoral shell. A thin and delicate variety with smooth epidermis is found in the Leda clay; coarser and more wrinkled varieties in the Saxicava sand. Larger specimens are found at Quebec and Rivièredu-Loup than more inland. In the modern Gulf, the small and depauperated varieties are littoral and near the brackish water, the finer varieties passing into Macoma fusca of Say, which is a southern variety, are found on the coast of Nova Scotia and in the Bay of Fundy. This shell is represented in the European seas and Post-pliocene deposits by the closely allied species M. solidula or Balthica, which seems to pass through a corresponding series of varieties, but to be distinct. On the western American coast it is similarly represented by M. inconspicua. Mr. Tryon and Mr. Whiteaves believe the three forms to be conspecific. (P. P. C.) It is said to be the Tellina Fabricii of Hanley, and I have specimens from Greenland from Morch labelled T. tenera. The T. tenera of Leach, however, is proxima, Brown, teste Hanley. It is apparently the Venus fragilis of Fabricius. It is one of the most common and abundant shells of the Postpliocene, as it is of the American coast from Greenland to New England. Macoma calcarea, Chemnitz. Fossil-Leda and Boulder clays; Montreal; Quebec; Murray Bay; Rivière-du-Loup; Duck Cove, St. John, N.B.; Maine; Labrador; Greenland (Möller); also European Post-pliocene. Recent Arctic seas generally, and on the American coast south to Massachusetts. This shell is is extremely abundant in the Leda and Boulder clays, and often occurs in the clay with the valves attached. It is also of large size and in fine condition, especially at Rivière-duLoup. It is Tellina proxima, Brown, T. sabulosa, Spengler, and T. sordida of Couthuoy. According to Hanley, the T. lata of Gmelin was founded on a figure of this shell. Macoma inflata, Stimpson. Fossil-Montreal; Rivière-du-Loup. Rare. Recent Murray Bay, and dredged in deeper parts of the Gulf of St. Lawrence by Mr. Whiteaves. I am not aware where this little shell has been described, nor what is its range. It seems identical with a specimen in Jeffrey's collection labelled Tellina fragilis Leach, from Spitzbergen. |