As we have introduced the subject of Davilla’s Cabinet, it will, perhaps, afford some pleasure to many of our readers if we mention a few of those very beautiful varieties of this natural family of the Harps, which were once concentrated in that costly collection. These, collectively, appear to have presented a series of the most choice and interesting of the varieties at that time known. The distinctions are taken from the number of the prominent ridges with which these shells are longitudinally traversed, and these, it hence appears, varied from thirteen to fourteen and fifteen in number. One of these, a very fine shell, and deemed the type of the _Harpe_ tribe, was the Harpa Nobilis of D’Argenville: it had fifteen ribs, was very regularly marked with alternate zic-zac lines of brown and white, or rather of brown lines disposed upon a white ground, with a small intermediate incurvate line of grey traversing the middle of each of the white lines, in the same, direction as those of brown; a disposition of marking, very similar to the zic-zac lineations upon the shell represented in the annexed plate. There were two other Harps, in which the number of ribs, or ridges, amounted to no more than fourteen, so that the sides were larger; and they were also more inclined than in the preceding. These were marbled, and marked with streaks and dashes of rose colour, yellow, white, and chesnut, a large intermediate and rather deeper coloured zone, or band, passed round the middle of the shell, and two large spots of brown appeared on the under surface of the shell. There were yet two other Harps, which differed in their colours and markings from the preceding; one of these had only twelve ribs, or ridges, the other thirteen. The colours in one of these were paler, in the other the zic-zac lines, were more contiguous, or placed closer, and the longitudinal striæ less distinct or prominent. And besides these, there were several others, all which differed in some peculiarities of inferior moment, principally in the paleness or intensity of their colours, and variations in the disposition of the dark and paler spaces with which the shells were marbled.