646 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



The identity of A. RoJbdllU, from Greenland, with this species, is very 

 doubtful, for it was described as smooth, with a firm corneus, fusco- 

 luteus ei^idermis. 



LUNATIA HERDS Adams. Plate XXIII, figs. 133 to 136. (p. 353.) 



H. and A. Adams, Genera.of Recent Mollusca, vol. i, p. 207^1858; Gould, Invert, 

 of Mass., ed. ii, p. 338, figs. 608, 609. Natica heros Say, Jour. Acad. Nat. Sci., 

 Philadelphia, vol. ii, p. 248, 1822 ; Gould, Invert., ed. i, p. 231. Natica triseriata 

 Say, op. cit., vol. v. p. 209 (color-variety) ; Gould, Invert., ed. i, p. 233. 

 Lunatia triseriata Gould, op. cit., ed. ii, p. 340, fig. 610. 



Georgia to Gulf of Saint Lawrence and southern coast of Labrador. 

 Coast of New Jersey, near Great Egg Harbor, abundant and large, 

 (A. E. Y.) ^southern side of Long Island, at Fire Island beach, abundant, 

 (S. L Smith) J Long Island Sound, at New Haven, not common; Vine- 

 yard Sound, abundant from low-water to 10 fathoms; Casco Bay, com- 

 mon; Bay of Fundy, common from low- water to 40 fathoms; Sain^ 

 George's Bank, common, (S. I. Smith); Gaspe (Dawson); Georgia 

 (Couper). The variety triseriata has the same distribution, and is the 

 more common form in the deeper waters, but is also found on the sand- 

 flats at low-water. It is common in Casco Bay and Bay of Fundy, in 

 1 to 40 fathoms ; off Martha's Vineyard, 10 to 20 fathoms ; and off New' 

 London, Connecticut, 10 fathoms. 



This species has been found fossil in the Miocene of Maryland, Vir- 

 ginia, and South Carolina ; in the Pliocene of South Carolina ; and in 

 the Post-Pliocene of Canada and South Carolina. 



Lunatia immaculata Adams. Plate XXIII, fig. 131. (p. 508.) 



H. and A. Adams, Genera of Recent Mollusca, vol. i, p. 207. Natica immaculata 

 Totteu, American Journal of Science, ser. i, vol. xxviii, p. 351, fig. 6, 1835 ; 

 Gould, Invertebrata, ed. i, p. 234, fig. 168, 1841. Mamma (f) immaculata Gould; 

 ed. ii, p. 344, fig. 614. 



Stonington, Connecticut, and eastern end of Long Island, to Gulf of 

 Saint Lawrence. Off Martha's Vineyard, 20 fathoms; east of Block 

 Island, 29 fathoms. Stonington (Linsley); Off' Napeague Point, Long 

 Island (S. Smith); Newport, E,. I. (Totteu). Massachusetts Bay, Casco 

 Bay, and Bay of Fundy, 5 to 80 ffithoms, common ; often found living 

 at low-water mark in the Bay of Fundy. 



iSTEVERiTA DUPLICATA Stimpsou. Plate XXIII, fig. 130. (p. 351.) 



Smithsonian Check -List, p. 5, 1860; Gould, Invert, of Mass., ed. ir, p. 345, fig. 

 615. Natica duplicata Say, Jour. Acad. Nat. Sciences, Philadelphia, vol. ii, p. 

 247, 1822 ; Gould, Invert., ed. i, p. 236, fig. 164, 1841. Lunatia duplicata H. 

 and A. Adams, Genera Eeceut Mollusca, vol. i, p. 207, 1858. 



Massachusetts Bay to Northern Florida; northwestern Florida to 

 Yucatan. Local and not common north of Cape Cod. Abundant at 

 Nantucket; Vineyard Sound; Long Island Sound; southern coast of 

 Long Island; New Jersey ; and southward. Saint Augustine, Florida 

 (Williams). Tampa Bay, Florida, and Egmont Key, abundant, (Jew^- 

 ett). Texas (Schott). Near Vera Cruz, Mexico (coll. T. Salt). 



