BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 77 
very loosely coiled, forming a very oblique, elevated spire the axis of 
which is situated at right angles to the axis of the succeeding turns. 
Post-nuclear whorls moderately rountled, separated by well impressed 
sutures, ornamented with strong, broad, low, protractive axial ribs, 
of which 12 occur upon the 2d; 14 upon the 3d, 4th, and 5th; 16 upon 
the 6th; and 17 upon the 7th and the penultimate turn. Intercostal 
spaces about one half as wide as the ribs, shallow. Periphery of the 
last whorl well rounded, smooth. Entire surface crossed by ex- 
ceedingly fine microscopic spiral striations. Aperture broadly ovate, 
posterior angle acute, outer lip thin, columella moderately strong and 
curved. 
The specimen described and figured is one of a series collected at 
Wood's Holl, Mass., cat. no. 203,811 U. S. N. M. It has nine and one 
quarter post-nuclear turns and measures: length, 4.2 mm.; diameter, 
1.1 mm. 
The type came from Long Island Sound, off New Haven, Conn. 
We have seen the following specimens : — 
No. of 
Disposition of 
Cat. no. 
spec. 
Locality. 
material. 
2 
Wood's Holl, Mass. 
H. W. Winkley coll, 
203,811 
15 
(( U (I 
U. S. nat. mus. 
83,411 
5 
" " " 
<i li 11 
62,340 
1.5 
NaushonI'd, " 
" " " 
203,815 11 
Turbonilla (Turbonilla) nivea (Stimpson). 
PI. 11, figs. 9, 10. 
Chemnitzia nivea Stimpson, Proc. Boston soc. nat. hist., vol. 4, p. 114, 1851. 
Shell regularly elongate-conic, sides of the spire almost forming a 
straight line; milk white. Nuclear whorls two and one half, helicoid, 
forming a strongly elevated spire which is situated at right angles to 
the axis of the post-nuclear turns. Post-nuclear whorls moderately 
rounded, crossed by broad, low, rounded protractive ribs, about 14 
of which appear upon the 2d ; 16 upon the 3d and 4th ; 18 upon the oth, 
6th, and 7th; 20 upon the 8th and Oth; and 22 upon the penultimate 
turn. Sutures well impressed. Periphery of the last whorl well 
rounded. Base short, well rounded, crossed by the weak continuations 
of the axial ribs. Aperture subquadrate, rather small, posterior angle 
