392 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [686] 



Fossil (G. lunulata] in the Post-Pliocene of North and South Carolina; 

 in the Pliocene of South Carolina ; and in the Miocene of Maryland and 

 Virginia. The fossil shell is probably identical with the recent one, but 

 I have not had suitable specimens of the former for comparison; if 

 identical, the species should be called G. lunulata. 



LUCINA FILOSA Stimpson. Plate XXIX, fig. 212. (p. 509.) 



Shells of New England, p. 17, 1851 ; Gould, Invert., ed. ii, p. 98, fig. 404. Lu- 

 cina radula Gould, Invert., ed. i, p. 69 (non Montagu, sp.). ? Luc ina contracta, 

 Say, Jour. Acad.Nat. Sciences, Philad., vol. iv, p. 145, Plate 10, fig. 8 ; Conrad, 

 Fossils of the Medial Tertiary of U. S., p. 40, Plate 20, fig. 5, 1840. 



Stonington, Connecticut, to Maine. Off Block Island, 29 fathoms, sandy 

 mud ; off Gay Head, 19 fathoms, soft mud ; Casco Bay and Portland 

 Harbor. Stonington (Linsley). Boston Harbor (Stimpson). Phillip s 

 Beach (Holder). Rhode Island (Conrad, as L. contracta). 



Fossil in the Post-Pliocene of Gardiner s Island (S. Smith). L. con 

 tracta occurs in the Miocene of Virginia ; it was formerly regarded by 

 Conrad as identical with the recent shell from Rhode Island, but is 

 probably a distinct, though closely-allied species. Mr. Jeffreys identi 

 fied this species with L. borcalis (Linue) of Europe; the latter is also 

 found on the Pacific coast at Vancouver Island and Catalina Island 

 (Cooper and P. P. Carpenter). 



CYCLAS DENTATA. Plate XXIX, fig. 211. (p. 418.) 



Lucina dentata Wood, General Couchology, p. 195, Plate 46, fig. 7, 1815 ; Gould, 

 Invert., ed. ii, p. 99, fig. 45. Lucina divaricata Gould, Invert., ed. i, p. 70, (non 

 Linn6, sp). Lucina strigilla Stimpson, Shells of New England, p. 17, 1851. 



Brazil and West Indies to Cape Cod. Not uncommon, dead, but rarely 

 obtained living, in Vineyard Sound, 6 to 14 fathoms. Coney Island (S. 

 Smith). Nantucket (Gould). St. George s Bank (S. I. Smith). Fort Ma- 

 con, North Carolina, abundant, (Cones, Yarrow). Georgia (Couper). 



Fossil in the Post-Pliocene of North Carolina, South Carolina, and 

 Florida; and in the Pliocene of South Carolina. The same, or a closely- 

 related species, (L. Gonradi D Orb., Prod., iii, p. 117, 2194, t. Conrad, in 

 Proc. Acad. Nat. Sci., Phil., 18G2, p. 577=Z. divaricata Conrad, Fossils 

 of Med. Tert., p. 38, Plate 20, fig. 3) occurs in the Miocene of Virginia. 



CRYPTODON GOULDII Adams. Plate XXIX, fig. 213. (p. 509.) 



H. and A. Adams, Genera, vol. ii, p. 470, 1858 ; Gould, Invert., ed. ii, p. 100, fig. 

 406. Lucina Gouldii Philippi, Zeitscb. f. Malak., 1845, p. 74 (t. Gould). 

 Thyasira Gouldli Stimpson, Shells of New Eng., p. 17, 1851. Lucina flexuosa 

 Gould, Invert., ed. i, p. 71, fig. 52 (non Montagu, sp.). 



Stonington, Connecticut, to Gulf of Saint Lawrence. Off Block 

 Island, 29 fathoms ; Buzzard s Bay, C fathoms, mud ; common in Mas 

 sachusetts Bay, Casco Bay, and Bay of Fundy, 5 to GO fathoms, muddy 

 and sandy. Nova Scotia (Willis). Gaspe, Canada (Whiteaves). Mur 

 ray Bay (Dawsou). Gulf of Saint Lawrence, 20 to 300 fathoms (White- 



