Opening the text

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.Wyatt, Thomas

Science

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.

Name: 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.
Author: Wyatt, Thomas

Wyatt, Thomas

Mollusks

T. crenulatus.
                          T. asperulus.
                          T. acutus.
                          T. concavus.
                          T. lineatus.
                          T. zizyphinus.
                          T. granulatus.
                          T. granatum.
                          T. moniliferus.
                          T. iris.
                          T. ornatus.
                          T. bicingulatus.
                          T. calliferus.
                          T. umbilicaris.
                          T. undatus.
                          T. Pharaonis.
                          T. sagittiferus.
                          T. carneolus.
                          T. cinerarius.
                          T. excavatus.
                          T. nanus.
                          T. pyramidatus.
                          T. erythroleucos.

_T. imperialis._ The imperial Trochus. Pl. 23, fig. 6.

Species umbilicated, spire very depressed, sharp and radiated at their
circumference by the preservation of an angular canal from the middle of
the right margin. This species is rare and beautiful, found in
New-Zealand.

_T. zizyphinus._ The livid Trochus.

Species with strong transverse striæ; colour livid, with undulated
streaks of red or brownish carnation.

_T. agglutinans._ The agglutinating or Carrier Trochus.

Species umbilicated, with spire very depressed; the base much enlarged,
and as if excavated by the large projection of the angle of the right
edge, which advances much beyond the rounded columellar edge; generally
covered with shells, stones, or coral.

_T. niloticus._ The large marble Trochus.

Species not umbilicated, conical, with base flat and circular; the
columella twisted; the aperture very angular.

_T. obeliscus._ The obelisk Trochus.

Species not umbilicated, conic, elevated, flat and circular base; the
termination of the columella strongly twisted, but passing down by the
margin, appearing sloped by the advance of an internal longitudinal
plait.

_T. iris._ The iris Trochus.

Species not umbilicated, conic, base oblique; aperture large, slightly
angular; the columella twisted, and forming a kind of tooth at its
termination.

_T. granulatus._ The granulated Trochus.

Conic, imperforate at the base, spirally granulated and not marginated
at the edges of the volutions; body swelling out; spire tapering
abruptly; apex acute, flesh-coloured.

_T. umbilicaris._ The umbilicated Trochus.

Shell conico-convex, rather flat, rounded at the top; apex depressed,
volutions sub-marginate; striated spirally; aperture compressed and
angular; umbilicus large, extending to the apex; colour whitish.


                  3. Monodonta. Twenty-three species.

Public-domain text, read in full here on John Shaqi.

Opening the text

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.Wyatt, Thomas

Science

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.

Wyatt, Thomas

Mollusks

T. crenulatus.
                          T. asperulus.
                          T. acutus.
                          T. concavus.
                          T. lineatus.
                          T. zizyphinus.
                          T. granulatus.
                          T. granatum.
                          T. moniliferus.
                          T. iris.
                          T. ornatus.
                          T. bicingulatus.
                          T. calliferus.
                          T. umbilicaris.
                          T. undatus.
                          T. Pharaonis.
                          T. sagittiferus.
                          T. carneolus.
                          T. cinerarius.
                          T. excavatus.
                          T. nanus.
                          T. pyramidatus.
                          T. erythroleucos.

_T. imperialis._ The imperial Trochus. Pl. 23, fig. 6.

Species umbilicated, spire very depressed, sharp and radiated at their
circumference by the preservation of an angular canal from the middle of
the right margin. This species is rare and beautiful, found in
New-Zealand.

_T. zizyphinus._ The livid Trochus.

Species with strong transverse striæ; colour livid, with undulated
streaks of red or brownish carnation.

_T. agglutinans._ The agglutinating or Carrier Trochus.

Species umbilicated, with spire very depressed; the base much enlarged,
and as if excavated by the large projection of the angle of the right
edge, which advances much beyond the rounded columellar edge; generally
covered with shells, stones, or coral.

_T. niloticus._ The large marble Trochus.

Species not umbilicated, conical, with base flat and circular; the
columella twisted; the aperture very angular.

_T. obeliscus._ The obelisk Trochus.

Species not umbilicated, conic, elevated, flat and circular base; the
termination of the columella strongly twisted, but passing down by the
margin, appearing sloped by the advance of an internal longitudinal
plait.

_T. iris._ The iris Trochus.

Species not umbilicated, conic, base oblique; aperture large, slightly
angular; the columella twisted, and forming a kind of tooth at its
termination.

_T. granulatus._ The granulated Trochus.

Conic, imperforate at the base, spirally granulated and not marginated
at the edges of the volutions; body swelling out; spire tapering
abruptly; apex acute, flesh-coloured.

_T. umbilicaris._ The umbilicated Trochus.

Shell conico-convex, rather flat, rounded at the top; apex depressed,
volutions sub-marginate; striated spirally; aperture compressed and
angular; umbilicus large, extending to the apex; colour whitish.


                  3. Monodonta. Twenty-three species.

Public-domain text, read in full here on John Shaqi.

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.

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.

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