by William Swainson

“ We have also added a figure of our Mitra acuminata, to shew how beautifully Mitreola is represented by the fourth type of the genus Mitra, as now restricted, to which type (represented by M. Zebra) , acuminata also belongs: both, as prototypes of the Strombidæ, have the outer lip gibbous near the top; but the plaits of the pillar are totally different, while the spire of one is acute, and of the other papillary. ”