352 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [646] 
The identity of A. Holbéllii, from Greenland, with this species, is very 
doubtful, for it was described as smooth, with a firm corneus, fusco- 
luteus epidermis. 
LUNATIA HEROS 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. 245, 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. V.) ;southern side of Long Island, at Fire Island beach, abundant, 
(S. J. Smith); 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; Saint 
George’s Bank, common, (S. I. Smith); Gaspé (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. Itis 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 Mollusea, vol. i, p. 207. Naticaimmaculata 
Totten, American Journal of Science, ser. i, vol. xxvili, p. 351, fig. 6, 1835 ; 
Gould, Invertebrata, ed. i, p. 234, fig. 168, 1841. Mamma (?) 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, R. I. (Totten). Massachusetts Bay, Casco 
Bay, and Bay of Fundy, 5 to 80 fathoms, common; often found living 
at low-water mark in the Bay of Fundy. 
NEVERITA DUPLICATA Stimpson. Plate XXIII, fig. 130. (p. 354.) 
Smithsonian Check List, p. 5, 1860; Gould, Invert. of Mass., ed. ii, 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 Recent Mollusca, vol. i, p. 207, 1858. 
Massachusetts Bay to Northern Fiorida; northwestern Florida to 
Yueatan. 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). 
