72 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
turns. Post-nuclear whorls rather high between the sutures, flattened, 
slightly shouldered at the summit, marked by fine incremental lines 
and a few scattered microscopic spiral striations. Periphery of the 
last whorl and base well rounded. Aperture ovate, posterior angle 
acute; outer lip thin showing the color band within; columella curved 
and somewhat revolute, bearing an oblique fold at its insertion. 
The specimen described comes from U. S. B. F. station 949. It is 
perfect and has eleven post-nuclear whorls measuring: length, 8.2 
mm.; diameter, 1.6 mm. 
The following specimens have been examined: — 
No. of 
Cat. no. spec. 
U.S.B.F. 
sta. Locality. 
Depth 
(fms.). 
Temp. 
Disposition of 
material. 
45,482 
2 
871 Martha's Vineyard, Mass. 
115 
49° I 
'. S. nat. mus. 
45,483 
1 
873 
100 
51° 
" " " 
45,485 
4 
949 
100 
52° 
ii It (i 
45,486 
2 
1038 
146 
47° 
" " " 
40,484 
1 
2242 S. of Martha's Vineyard, Mass. 
58 
51° 
11 U i< 
50,966 
1 
2540 " 
144 
47° 
" " " 
94,819 
1 
949 Off 
100 
52° 
u « a 
Pyramidella (Syrnola ?) producta (C. B. Adams). 
PI. 11, fig. 3. 
Jaminia producta C. B. Adams, Boston journ. nat. hist., vol. 3, p. 322, 
pi. 3, fig. 8, 1840. 
Shell elongate-conic, light yellowish brown, translucent (nuclear 
whorls eroded in all our specimens). Post-nuclear turns rather liigh 
between the sutures, well and evenly rounded, appressed to the pre- 
ceding turn at the summit, marked by fine lines of growth and numer- 
ous microscopic spiral striations. Sutures well impressed. The 
semitransparent shell allows the preceding whorl to shine through it 
which gives the whorl the appearance of possessing double sutures. 
Periphery of the last whorl well rounded. Base somewhat produced, 
well rounded, marked like the spaces between the sutures. Aperture 
obhcjue, irregularly ovate, posterior angle acute, outer lip very thin 
and translucent, columella rather stout, oblique, twisted and slightly 
revolute^ pro\'ided with a strong oblique fold a little anterior to its 
insertion. 
The specimen figured and described, cat. no. 203,741 U. S. N. M., 
was collected bv Rev. H. W. Winkley from the Branford River, Conn. 
