78 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
acute, outer lip thin, showing the external sculpture within ; columella 
slender, curved, and very slightly revolute. 
The specimen described, cat. no. 203,810 U. S. N. M., has ten post- 
nuclear whorls and measures: length, 5.2 mm.; diameter, 1.4 mm.; 
it was collected at Wood's Holl, Mass. 
We have seen the following specimens : — 
Cat. no. 
No. of 
spec. 
U. S. F. 
sta. 
C. 
Locality. 
Depth 
(fms.). 
Temp. 
Disposition of 
material. 
203,810 
1 
Wood's 
Holl, Mass. 
U. S. nat. mus. 
1128a 
3 
11 
" " 
Wood's Holl coll. 
1 
840 
" 
" " 
" " " 
203,816 
4 
7 
it 
(( ti 
U. S. nat. mus. 
H.W.Winkley coll, 
45,481 
949 
Off Martha's Vine- 
100 
52° 
U. S. nat. mus. 
yard, 
Mass. 
Chemnitzia D'Orbigny. 
Chemnitzia D'Orbigny, Hist. nat. Isles Canaries, p. 77, 1839,= ? Micro- 
beliscus Sandberger, 1874. 
Shell elongate-conic, having strong axial ribs which terminate at the 
periphery of the whorls; intercostal spaces excavated between the 
sutures. Spiral sculpture absent or, if present, consisting of micro- 
scopic striations only. 
Type, Melania campanellae Philippi. 
Turbonilla (Chemnitzia) aequalis (Say). 
Turritella aequalis Say, Journ. acad. nat. sci. Phila., vol. 5, p. 208, 1827,^ 
Turbonilla equalis Verrill, Rept. U. S. comm. fish and fisheries, pt. 1, p. 659, 
1873,= Turbonilla aequalis Verrill, Trans. Conn. acad. arts and sci., vol. 5, 
p. 588, 1882. 
We have not seen this species and quote Say's ('27, p. 208) descrip- 
tion. 
"Shell subulate, white; volutions ten, each with about twenty-two 
transverse, elevated, obtuse, equal lines, with interstitial grooves of the 
same diameter; suture distinct, impressed; aperture rounded at base, 
and destitute of any distinct emargination. Length | of an inch." 
To this Professor Verrill ('73, p. 659) adds: "My specimens agree 
well with the above description. The shell is very slender and acute, 
