688 KEPOET OF COMMISSIONER OF FISH AND FISHERIES. 



The Ainericau specimens of this shell differ so widely in form, and 

 especially in the strnctare of the hinge, from all the European speci- 

 mens with which I have compared* them, as well as from the descrip- 

 tions and flgures, that I cannot regard them as identical. Dr. Gould has 

 well defined the form and external characters of our shell. I have seen 

 no European specimens so elongated in form as the American examples 

 seen by me invariably are, but depend less on the external form than on 

 the structure of the hinge for distinguishing them. (See the greatly en- 

 larged figure in the Amer. Journal of Science). 



Having had opportunities to study northern specimens of this shell, 

 since I gave it the name nitida, I have become fully satisfied that the 

 original shell described by Eabricius is identical with the American 

 species, rather than with the Euroi)ean. His description corresponds 

 well with our best specimens. The European species, if, as I believe, 

 distinct from ours, should, therefore, retain the name T. purimrea (Mon- 

 tagu, S}). ); and miniita should be restored to the American form. 



Kellia planulata Stimpson. Plate XXX, fig. 22G. (p. 310.) 



Shells of New England, j). 17, 1851 ; Gould, Invert., ed. ii, i>. 83, fig, 393. Kdlid 

 rubra Gould, Invert., ed. i, p. 60, {non Montagu, sp.). 



Long Island Sound to Greenland. Xear New Haven, Connecticut, rare ; 



Vineyard Sound and Buzzard's Bay, 1 to 8 fathoms, not common ; Casco 



Bay ; Eastport, ^Maiue, 8 to 15 fathoms 5 Bay of Fundy. Montauk and 



Greenport, Long Island, low-water to G fathoms, mud ; and Gull Island, 



low-water, under stones, (S. Smith). Boston Harbor, 5 fathoms, shelly, 



(Stimpson). Sable Island, Nova Scotia (Willis). Greenland (Morch). 



MONTACUTA ELEVATA StiuipSOU. ([). 418.) 



Shells of New England, p. 16, 1851 ; Gould, Invert., ed. ii. p. 86, fig. 396. Mon- 

 tacKta hidenlata Gould, Invert., od. i, !>. 59, 1841 (non Montagu, sp., 1803), 



Long Island Sound to Massachusetts Bay. Savin Rock, near Xew 

 Haven, rare; Naushon Island, Vineyard Sound, rare. Greenport, Long 

 Island (S. Smith). Xew Bedford (Gould). Chelsea Beach (Stimpson). 



Lepton fabagella Conrad. 



Marine Conchology, p. 53, Plate 11, fig. 3,1831; Dekaj-, Nat. History of New 

 York, Mollusca, p. 243, Plate 32, fig. 307, A, B. 



Ehode Island (Conrad). 



I have not seen specimens of this shell. It seems to be rare and little 

 known. 



A closely-related species {L. maciroides Conrad, Fossils Medial Tert., 

 p. 19, Plate X, fig. 5, 1839) is found in the Miocene of Maryland. 



SOLENOMYA VELUM Say. Plate XXIX, fig. 210. (p. 3G0.) 



Journal Acad. Nat. Sciences, Philad., vol. ii, p. 317, 1822 (Sohnnya); Gould, Invert., 

 ed. i, p. 35 ; ed. ii, ji. 48, tig. 371. 



Xortli Carolina to Nova Scotia. Great Egg Harbor, Xew Jersey ; Long 

 Island Sound, near Xew Haven, low- water to 6 fathoms, not uncommon 



