BARTSCH: NEW ENGLAND PYRAMIDELLIDAE. 75 
Ptycheulimella Sacco. 
Ptycheulimella^acco, Moll, del Plemonte e della Liguria, pt. 11, p. 59, 1892. 
Shell elongate-conic. Axial sculpture consisting of obsolete ribs 
frequently only shown in the early post-nuclear turns. Spiral sculp- 
ture, if present, consisting of microscopic striations only. 
Type, Tornatella pyramidata Deshayes. 
Turbonilla (Ptycheulimella) emertoni Verrill. 
PI. 11, figs. 2, 5. 
Turbonilla emertoni Verrill, Trans. Conn. acad. arts and sci., vol. 5, p. 536, 
pi. 58, figs. 14, 14a, 1882. 
Shell subulate, having strongly impressed sutures; milk white. 
Nuclear whorls two and one half, depressed helicoid, about one fourth 
immersed in the first post-nuclear turn. The axis of the nuclear spire 
is almost at right angles to that of the succeeding whorls. Post- 
nuclear whorls slightly flattened in the middle between the sutures, 
rounding abruptly toward the summit and the periphery. This 
sudden rounding off above and below gives the sutures their constricted 
appearance and makes the whorls look rather inflated. All the 
whorls are marked by traces of obsolete axial ribs which are best 
developed on the posterior half of the first post-nuclear turn. Pe- 
riphery of the last whorl well rounded. Base somewhat inflated, well 
rounded, smooth, marked by indications of faint extensions of the 
obsolete riblets. Aperture subquadrate (?), outer lip thin, fractured; 
columella slender, curved, and slightly re volute. 
The type, cat. no. 153,543 U. S. N. M., has ten post-nuclear whorls 
and measures: length, 5.7 mm.; diameter, 1.3 mm. It was dredged 
by the U. S. fish commission off Martha's Vineyard, Mass., sta. 895, 
in 238 fathoms. 
Turbonilla (Ptycheulimella ?) polita (Verrill). 
Aclis polita Verrill, Amer. journ. sci., ser. 3, vol. 3, pp. 210, 282, pi. 6, fig. 
5, 1872; Trans. Conn. acad. arts and sci., vol. 5, p. 538, fig. 4, 1882. 
"Whorls twelve, besides the nucleus, well-rounded, smooth and 
