676 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Blaiiiv.j 1824:,=^MacJia Oken, 1835, and undoubtedly belongs to the 

 TelUnidce, near Fsammobia, as shown by the structure of the soft parts. 

 (See page 373 and Plate xxvi, fig. 181). 



TAaELiJS Divisus. Plate XXX, fig. 218. (p. 435.) 



Dall, op. cit., 13. 251, 1870. Solcn divisus Spengler, op. cit., p. 96, 1794 (t. Gould). 

 Solen hidens Chemnitz, op. cit., p. 203, Plate 198, fig. 1939, 1799. Solen fragilis 

 Pulteney, Dorset Catal., p. 28, Plate 4, fig. .5, 1799 (t. Gould). Solen centralis 

 Say, Journ. Acad. Nat. Sci., Philad., vol. ii, p. 316, 1822. Solecwtus hidens 

 Forbes and Hanley, op. cit., vol. i, -p. 266 ; Stimpson, Shells of New England, 

 p. 22. Solecurtas divisus Gould, Invert., ed. ii, p. 44, fig. 368. Macha divisa 

 Gray, Catal. Brit. Moll., p. 160. Leguminaria Floridana Conrad, Proc. Acad. 

 Nat. Sci., Philad., vol. iv, x>. 121, 1848. Mesopleura bidentaia Conrad, Catal. 

 Solenidaj, Amer. Jour. Conch., vol. iii, Appendix, p. 23, 1867. 



Gulf of Mexico and West Indies to Cape Cod. Vineyard Sound and 

 Buzzard's Bay, not common. Rhode Island, rather common, (Gould). 

 Fort Macon, Xorth Carolina, common, (Cones). Tampa Bay, Florida, 

 (Conrad, Jewett). 



Macoma fragilis Adams. Plate XXX, fig. 222. 



H. and A. Adams, Genera, vol. ii, p. 400, 1858. 



Yar,fusca == Macoma fusca Adams, (p. 359.) 



Genera, vol. ii, p. 400; Gould, Invert., ed. ii, p. 93, fig. 400. Fsammobia fusca 

 Say, Jour. Acad. Nat. Sci., Philad., vol. v, p. 220, 1825. Sang uinolaria fusca Con- 

 rad, Aiuer. Mar. Couch., p. 34, Plate 7, fig. 1, 1831 ; Gould, Invert., ed. i, p. 66, 

 fig. 42. 



Yar. fragilis. 



Venus fragilis O. Fabricius, Fauna Groulandica, p. 413, 1780. TelUna Grbnlan- 

 dica Beck, Lyell, in Trans. Geol. Soc, London, vol. v, p. 137, Plate 16, fig. 8, 

 1841. Macoma Grmlandica Packard, Mem. Boston Soc, vol. i, pp. 235, 243, etc. 

 1866; Dawson, Notes on Post-Pliocene Geology of Canada, p. 72, from Cana- 

 dian Naturalist, vol. vi, 1872. TelUna Fahricii Hanley; Sowerby, Thesaurus, p. 

 112, (t. Morch). 



Georgia to Greenland. Yar. fusca is abundant on the entire coast of 

 New England, Long Island, and New Jersey. Georgia (Say, Couper). 

 Yar. fragilis is abundant from Long Island Sound and Massachusetts 

 Bay to Labrador. The two forms grade into one another insensibly. 



A closely related but apparently distinct species, 21. Baltliica (Linne, 

 sp.), is abundant in the Baltic and elsewhere on the northern coasts of 

 Europe, and has been regarded as identical by several writers. Another 

 similar form, inconspicua (Sowerby), occurs on the northwest coast of 

 America, but is regarded as distinct by Dr. P. P. Carpenter and others. 



As a fossil, var. fragilis is abundant in the Post-Pliocene deposits of 

 New England, New Brunswick, Canada, Labrador, and Greenland; var. 

 fusca occurs in the Post-Pliocene of New England, Yirginia, North Caro- 

 lina, and South Carolina. 



