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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. — 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.Wyatt, Thomas

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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

_S. Australis._ The Australian Saxicava. Pl. 7, fig. 6.

Answers to the above description.

_S. Gallicana._ The Gallic Saxicava.

Oblong, wrinkled, truncated at the posterior extremity, one valve larger
than the other; pale horn colour.


                    2. Petricola. Thirteen species.

This genus possesses the same faculty of boring rocks as the Saxicava;
it is distinguished from the latter genus by the hinge having one or two
teeth in each valve.

Shell sub-trigonal, transverse, inequilateral; upper side narrowed and a
little gaping; lower side rounded.

                          Petricola lamellosa.
                          P. ochroleuca.
                          P. semilamellata.
                          P. lucinalis
                          P. striata.
                          P. costellata.
                          P. rocelaria.
                          P. exilis.
                          P. ruperella.
                          P. chamoides.
                          P. pholadiformis.
                          P. labagella.
                          P. linguatula.

_P. lamellosa._ The lamellous Petricola. Pl. 7, fig. 3.

Species oval, trigonal, radiated; two teeth on one valve, and one on the
other.

_P. pholadiformis._ The Pholas-shaped Petricola.

Species transversely elongated.


                     3. Venerirupis. Seven species.

Another lithophagous shell, taken from the genus Venus, from which it is
distinguished by the different disposition of the teeth, having three
primary in one of the valves at least.

Shell more or less irregular, sub-trigonal, striated or radiated,
equivalve, inequilateral, the anterior side shorter and rounded, the
posterior sub-truncated; summits well marked; hinge sub-regular, more or
less dissimilar, formed by slender, narrow, cardinal teeth, variable in
number on each valve, sometimes two on the right and three on the left,
and sometimes three on both; these teeth are small, contiguous,
parallel, and but little, if at all, divergent exterior; very weak.

                         Venerirupis perforans.
                         V. nucleus.
                         V. irus.
                         V. exotica.
                         V. distans.
                         V. crenata.
                         V. carditoides.

_V. perforans._ The perforating Venerirupis.

Sub-rhombic, transversely striated, wrinkled on the anterior side;
exterior brown, interior white, sometimes tinged with purple.

_V. irus._ The foliated Venerirupis. Pl. 7, fig. 2.

Species longitudinally striated; cardinal teeth two, sometimes three on
the right and three on the left.


                              FAMILY VIII.
                         NYMPHACEA. Ten genera.

This family is divided into N. Solenaria and N. Tellinaria, from their
resemblance to the Solen and the Tellina.


                      N. SOLENARIA. Three genera.


                    1. Sanguinolaria. Four species.

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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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