2. Mitra. The Mitre Shell. Eighty species.

A numerous and elegant genus of shells, separated by Lamarck from the

Voluta on account of possessing several strong distinctive characters.

The spire is always pointed, and the columellar plaits, diminishing in

size, are always transverse and parallel to each other.

The exterior is sometimes most beautifully marked with transverse

grooves, striæ, punctures, or granulations; the colour of almost every

hue.

Shell turreted, sub-fusiform, and oval; the spire always pointed at the

summit; the aperture small, triangular, wider and strongly notched

anteriorly; the external edge sharp, almost straight, always longer than

the columella, which is formed by a very thin callosity, and marked with

oblique parallel plaits, of which those anterior are the shortest.

Mitra episcopalis.

M. papalis.

M. pontificalis.

M. puncticulata.

M. millepora.

M. cardinalis.

M. archiepiscopalis.

M. versicolor.

M. sanguinolenta.

M. pediculus.

M. lactea.

M. cornicularis.

M. lutescens.

M. striatula.

M. subulata.

M. cornea.

M. tringa.

M. melaniana.

M. ferruginea.

M. terebralis.

M. adusta.

M. granulosa.

M. crocata.

M. casta.

M. nexilis.

M. olivaria.

M. scabriuscula.

M. granatina.

M. crenifera.

M. serpentina.

M. tæniata.

M. plicaria.

M. corrugata.

M. costellaris.

M. lyrata.

M. melongena.

M. cinctella.

M. vulpecula.

M. Caffra.

M. sanguisuga.

M. stigmataria.

M. filosa.

M. fissurata.

M. arenosa.

M. clavulus.

M. literata.

M. Peronii.

M. obliquata.

M. oniscina.

M. scutulata.

M. dactylus.

M. fenestrata.

M. crenulata.

M. texturata.

M. conulus.

M. limbifera.

M. aurantiaca.

M. amphorella.

M. coronata.

M. paupercula.

M. cucumerina.

M. patriarchalis.

M. muriculata.

M. torulosa.

M. ebenus.

M. harpæformis.

M. semifasciata.

M. retusa.

M. microzonias.

M. ficulina.

M. nucleola.

M. unifascialis.

M. bacillum.

M. conularis.

M. plumbea.

M. larva.

M. pisolina.

M. dermestina.

M. granulifera.

M. tabanula.

_M. episcopalis._ The episcopal Mitre. Pl. 31, fig. 7.

Species turreted, with spiral whorls very wide and entire; the aperture

effuse anteriorly.

_M. papalis._ The papal Mitre.

Species with coronated whorls.

_M. pontificalis._ The pontifical Mitre.

Species covered with a yellowish epidermis, beneath which are

interrupted fillets of orange coloured spots; spire crowned with

tubercles.

_M. micozonias._ The small white-banded Mitre.

Species sub-ovate, spire very short, generally tubercled.

_M. dactylus._ The six-plaited Mitre.

Species oval, spire very short, and generally latticed.

_M. tæniata._ The riband Mitre.

Species flaring, turreted, ribbed; spire more than half the length of

the shell; aperture very narrow, long, sub-canaliculated, with one

plait.

A Manual of Conchology According to the System Laid Down by Lamarck, with the Late Improvements by De Blainville. Exemplified and Arranged for the Use of Students. · 第 221 / 258 题