. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 3G4 Fig. 177.—Colombella. less coated with a vitreous covering or enamel-like glaze, probably secreted by the mantle. The columella is uniformly curved, and it is believed that none of the species have hitherto been found in the New ;— BroderipJ] [The Melo, Broderip, resembles Cymba; but its apex, instead of being shapeless and rude, takes a well-fashioned and spirally-marked form. The colouring of the shell is also more elegant
. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 3G4 Fig. 177.—Colombella. less coated with a vitreous covering or enamel-like glaze, probably secreted by the mantle. The columella is uniformly curved, and it is believed that none of the species have hitherto been found in the New ;— BroderipJ] [The Melo, Broderip, resembles Cymba; but its apex, instead of being shapeless and rude, takes a well-fashioned and spirally-marked form. The colouring of the shell is also more elegant and vivid.] Others (Voluta, Montf.) have the last whorl conoid, narrowing at the end opposed to the spire. The foot is less than in the preceding genus. Their shells are often very remarkable for the beauty of the colours and patterns which are painted on their surface. [There is reason to believe that the genera Cymba, Melo, and Voluta, are viviparous.] Marginella, Lam., with the form of the Voluta, has the outer lip thickened and revolute. The sinus is slightly marked. According to Adanson, the foot is also less, and has no operculum. The animal can partially cover its shell by raising the lobes of its cloak. The tentacula have the eyes upon the outer side at their base. M. de La- marck distinguishes among them the Colombella, by the more numerous plaits on the shell, and by a swelling of the middle of the outer lip. It appears that there is no operculum. Mitra, Lam., has an oblong aperture with some large folds on its columella, of which those next the spire are the largest. Their spire is generally long and pointed. Several species are brilliantly spotted with red upon a white ground. Their animal has a small foot, tenta- cula of moderate length, with the eyes on the side one-third above the roots, and a moderate siphon; but it will often protrude a proboscis longer than the shell. [The genus Conohelix, of Swainson, has a form more conical than the typical Mitrae ; but
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectzoology, bookyear1854
