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The Conchologist's First Book: A System of Testaceous Malacology, Arranged Expressly for the Use of Schools, in Which the Animals, According to Cuvier, Are Given With the Shells, a Great Number of New Species Added, and the Whole Brought Up, as Accurately as Possible, to the Present Condition of the Science.Poe, Edgar Allan

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The Conchologist's First Book: A System of Testaceous Malacology, Arranged Expressly for the Use of Schools, in Which the Animals, According to Cuvier, Are Given With the Shells, a Great Number of New Species Added, and the Whole Brought Up, as Accurately as Possible, to the Present Condition of the Science.

Name: The Conchologist's First Book: A System of Testaceous Malacology, Arranged Expressly for the Use of Schools, in Which the Animals, According to Cuvier, Are Given With the Shells, a Great Number of New Species Added, and the Whole Brought Up, as Accurately as Possible, to the Present Condition of the Science.
Author: Poe, Edgar Allan

Poe, Edgar Allan

Mollusks

_Shell._ Solid, adhering, subirregular, inauriculated, inequivalve,
pointed at the summit, rounded and subplicated posteriorly; inferior
valve without heel; hinge cephalic, longitudinal, provided upon each
valve with two strong teeth, entering in corresponding cavities;
ligament altogether internal and inserted in a median cavity. Inhabits
the American seas. Five species.

 Plicatula ramosa.
 P. depressa.
 P. cristata.
 P. Australis.
 P. reniformis.


                     6. Genus _Spondylus_. Pl. IX.

_Animal._ Body moderately compressed, provided inferiorly with a
rudiment of a foot, without byssus; mantle open in all its inferior and
superior portion; mouth surrounded with very thick and fringed lips.

_Shell._ Solid, adhering, subregular, more or less spined,
subauriculated, inequivalve; the right or inferior valve fixed, much
more excavated than the other, and having posteriorly at the summit a
triangular face enlarging, and elongating with age; hinge longitudinal,
provided in each valve with two strong teeth entering corresponding
cavities; ligament short, nearly median, partly exterior; muscular
impression single and subdorsal. Found in all the seas of hot climates,
and even in the Mediterranean. Four or five fossils are found in France,
one in South America. Twenty-one species.

 Spondylus candidus.
 S. coccineus.
 S. spathuliferus.
 S. gædaropus.
 S. arachnoides.
 S. multilamellatus.
 S. longitudinalis.
 S. costatus.
 S. longispinous.
 S. regius.
 S. variegatus.
 S. avicularis.
 S. zonalis.
 S. crassisquama.
 S. ducalis.
 S. violascens.
 S. microlepos.
 S. crocens.
 S. radians.
 S. aurantius.

        ·       ·       ·       ·       ·

 S. Americanus.*


                      7. Genus _Podopsis_. Pl. IX.

_Animal._ Unknown.

_Shell._ Subregular, somewhat thick, equilateral, symmetrical,
inequivalve, adhering by the extremity of the shorter valve; the other
terminating in a pointed, reflexed, and median summit. Two fossil
species.


                              FAMILY XIX.

                         OSTRACEA. Six genera.


                       1. Genus _Ostrea_. Pl. IX.

_Animal._ Body compressed, more or less orbicular; edges of the mantle
thick, not adhering or retractile, and provided with a double row of
short and numerous tentacular filaments; two pairs of elongated and
triangular labial appendages; a subcentral bipartite muscle.

_Shell._ Irregular, inequivalve, inequilateral, roughly foliaceous, the
left or inferior valve adhering, larger and deeper than the other, its
summit prolonged with age into a sort of heel; the right or superior
valve more or less operculiform; hinge oral, toothless; ligament
subinterior, short, inserted in an oblong cardinal cavity increasing
with the summit; muscular impression single and subcentral. Found in all
seas near the mouths of rivers. Defrance enumerates one hundred and
twenty species. Lamarck thirty-three fossil, forty-nine living.

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