Shell very thin, conical, tubular, involuted in a loose and irregular
spiral manner; aperture circular, edges sharp, interrupted in the middle
by a notch prolonged like a slit through nearly all its length, stopped
abruptly at some distance from the summit.
Siliquaria anguina.
S. muricata.
S. lævigata.
S. lactea.
_S. anguina._ The Snake Siliquaria. Pl. 33, fig. 4.
Shell tapering, undulating, spiral at the extremity.
_S. muricata._ The Prickly Siliquaria.
Species armed with short spines or prickles; aperture sometimes
margined; usually of a rosy or pink colour.
FAMILY II.
MALDANIÆ. Two genera.