...bluish-white, nuclear whorls, at least two, large and smooth, forming a depressed helicoid spire, which is a little more than half obliquely immersed in the first of the succeeding turns. Postnuclear whorls well rounded, feebly shouldered at the summit, marked by quite regular, equal...

...elongate-conic, semitninslucent. Nuclear whorls small, forming a depressed helicoid spire, which is a little more than half obliquely immersed in the first of the succeeding turns. Post-nuclear whorls moderately rounded, marked by four strong, equal, and almost equally spaced...

...1839. Shell very elongate-ovate, milk white. Nuclear whorls at least two, smooth, depressed helicoid, a little more than half obliquely immersed in the first of the succeeding turns. Post-nuclear whorls well rounded, somewhat shouldered at the summit, ornamented between the...

...bluish-white, nuclear whorls, at least two, large and smooth, forming a depressed helicoid spire, which is a little more than half obliquely immersed in the first of the succeeding turns. Postnuclear whorls well rounded, feebly shouldered at the summit, marked by quite regular, equal...

...bluish-white, nuclear whorls, at least two, large and smooth, forming a depressed helicoid spire, which is a little more than half obliquely immersed in the first of the succeeding turns. Postnuclear whorls well rounded, feebly shouldered at the summit, marked by quite regular, equal...

...is almost at right angles to the axis of the succeeding turns. The nuclear spire is about one-fourth immersed in the first of the succeeding whorls. Postnuclear whorls slightly rounded, strongly appressed at the summit, marked by extremely feeble, almost vertical axial ribs which are...