GASTEROPODA. 43 
N. Groénuanpica, Beck. Moll. ™. pusilla, Gould, 237, 
f.166. F. et H., Brit. Moll. (non Say.) — Lamin. 
Corall. In 40 f. off Grand Manan, (W. 8.) to Cape 
Cod. 
N. mmacunata, Totten. Gould, 234, f. 168. — Lamin. 
Whole Coast. Eastport Harb. 5 f. mud, (W. 8.) 
Off Grand Manan, in 40 f. (W. 8.) Salem Harb. 
3 f. mud and sand, (Wh. and W. 8.) Boston Harb. 
5 f.(W.S.) Provincetown Harb. (Tott.) Stoning- 
ton, (Linsley.) 
N. pupticata, Say. Gould, 236, f. 164.— Litt. amin. 
From Mass. Bay southward. 
N. pusitua, Say, J. A. N. S. ii. 257, 1821.— Lamin. 
Buzzard’s Bay in 3-8 f. (Prime and W. 8.) 
Lieut. Kurtz has found the shell here intended on 
the coast of South Carolina, and is inclined to refer it 
to Mr. Say’s species. As it is somewhat uncertain, 
I append the following description. 
Shell resembling in shape NV. immaculata, minute, 
1 inch in length, thick and strong, yellowish brown, 
(except around the umbilicus, where it is white,) and 
beautifully marked with longitudinal zigzag lines of 
mahogany color. Umbilicus closed by an abundant 
white callus, leaving a narrow sulcus ; — there is also 
much callus deposited on the pillar lip, especially 
where it joins the outer lip. Operculum calcareous, 
like that of NV. clausa. 
N. ciausa, Brod. et Sow. Gould, 238, f. 167. — Corall. 
From Cape Cod northward. Eastport and Grand 
Manan, in 20-50 f. gravel, (W. 8.) 
