[r>~".>] INVERTEBRATE ANIMALS OF YIXFAAKI) SOUND, ! l< 



very coniinon in Buzzard's liny and Viiicy;ir<l Sound, 1 f ." 

 especially in soft mud, in coves; Chelsea IJeaHi, <!<-., Massaeliu- 

 common; Casco Bay, rare. Nova Scotia (Willis). Hunting-ton am! 

 Greenport, Long Island, rare, (S. Smith). 



SOLENOMYA BOREALIS Totteu. 



Amcr. Jour. Science, vol. xxvi, p. 366, fig. 1, h, i, 1834 (Solemya borealin); 

 Invert., cd. i, p. 36 ; ed. ii, p. 50, tig. 372. 



Connecticut toXovaScotia. Newport, Khode Island (Totten). 

 and Xahaut, Massachusetts (Gonld). Casco Bay and Portland Harbor 

 rare; Vineyard Sound, at Cuttyhunk Island, rare. Stouiugton, Connec- 

 ticut (Linsley). 



This species may prove to be only the mature state of the preceding, 

 but I have never seen specimens intermediate in character. 



YOLDIA LIMATULA Stiinpson. Plate XXX, fig. 232. (p. 432). 



Shells of New England, p. 9, 1851; H. and A. Adauis, Genera, vol. ii, p. :,H, 

 Plate 126, figs. 5, 5&, 1858; Gould, Invert., ed. ii, p. 154, fig. 46<J. JY/< 

 limatala Say, Amer. Conch., ii, Plate 12, middle figures, 1831 ; Gould, Invert.. 

 p. 98, fig. 62. Leda limatula Stimpsou, Shells of New England, p. 10, ]>-:>!. 



Xorth Carolina to Gulf of Saint Lawrence. Common in Long Island 

 Sound 5 Buzzard's Bay; Vineyard Sound; Casco Bay, in 2 to 12 fathoms, 

 soft mud ; less common in the Bay of Fundy, 4 to 30 fathoms. Beaufort, 

 North Carolina (Stirnpson, Coues). Huntiugton and Greenport, Long 

 Island (S. Smith). Nova Scotia (Willis). The specimens from Long 

 Island Sound are as large and fine as the northern ones. 



Fossil in the Post-Pliocene of Canada, Virginia, North and South 

 Carolina; and in the Pliocene of South Carolina. An allied species ( Y 

 Iwvis Say, sp., Conrad) occurs in the Miocene of Maryland and South 

 Carolina. 



Yoldia myalls Stirnpson ; Gould, Invert., ed. ii, p. 1GO, fig. 407; "Fticula 

 myalls Couthouy, 1838. This is often confounded with Y. limatula j though 

 quite distinct. It is a more arctic species, ranging from Massachusetts 

 Bay to the Arctic Ocean and Spitsbergen, but it has not been found 

 south of Cape Cod, so far as known to me. The shells reported as such, 

 that I have seen, are Y. limatula. Gould reports the latter as from Nord- 

 land (McAndrew), but we suspect that Y. myalls or Y. sapotilla may 

 have been, in this case, mistaken for Y. limatula. 



YOLDIA SAPOTILLA Stimpson, 1851. Plate XXX, fig. 231. (p. 509.) 



H. and A. Adams, Genera, vol. ii, p. 548; Gould, Invert., ed. ii, p. 159, fig. 466. 

 Nucula sapotilla Gould, Invert., ed. i, p. 100, fig. 61,1841; Hanley, Recent 

 Shells, p. 170, Plate 20, fig. 3. Leda ( Yoldia) sapolilla Stimpson, Shells of New- 

 England, p. 10, 1851. Yoldia arctica Morch, op. cit., p. 93, 1857 (t. Dawson. 

 from specimen; non Y. arctica Sars). 



Long Island to the Arctic Ocean, comparatively rare and local, chiefly 

 in deep water, south of Cape Cod. Off Gay Head, 19 fathoms, soft mud ; 

 off Buzzard's Bay, 25 fathoms, sand; east of Block Island, 29 fathoms, 

 27 v 



