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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._ Found only in fresh water; subdiscoid or conoid, umbilicated,
spiral, whorls, rounded; angular at the summit; aperture round, not
modified by the penultimate whorl; the margins sharp and united;
operculum orbicular and horny. Inhabits the rivers of Europe and
America. Three species.

 Valvata piscinalis.

        ·       ·       ·       ·       ·

 V. arcnifera.* (_Lea_.)
 V. tricarinata.*


                      2. Genus _Paludina_. Pl. X.

_Animal._ See Helix.

_Shell._ Generally found in fresh water, though some species have been
found where it is salt; conoid covered with a greenish epidermis; the
whorls rounded or convex, spiral cavity modified by the last whorl;
aperture rounded, oval, oblong, angular at the summit; margins united,
acute, never reflected outwards; operculum orbicular and horny. Inhabits
the rivers of America and Europe. Thirty-one species.

 Paludina vivipara.
 P. Bengalensis.
 P. viridis.
 P. Francesii.
 P. achatina.
 P. Australis.
 P. impura.
 P. muriatica.

        ·       ·       ·       ·       ·
 P. sinistrosa.*
 P. Nuttaliana.*
 P. virens.*
 P. pallida.*
 P. subcarinata.*
 P. genicula.*
 P. magnifica.*
 P. limosa.*
 P. subglobosa.*
 P. lapidaria.*
 P. Virginica.*
 P. hyalina.*
 P. unicolor.*
 P. nuclea.*
 P. decisa.*
 P. fuscus.*
 P. dissimilis.*
 P. ponderosa.*
 P. integra.*
 P. porata.*
 P. lustrica.*
 P. grana.*
 P. Nickliniana.*


                     3. Genus _Ampullaria_. Pl. X.

_Animal._ Inflated, globular, spiral; foot oval, with a transverse
furrow at its anterior edge; head wide; tentacula superior, very long,
conical, and pointed; eyes situated at their external base, and
supported upon a very apparent peduncle; mouth vertical, situated
between two lips disposed in form of a horse-shoe and forming a kind of
muzzle; no superior tooth; a bristly lingual band, but not prolonged
into the abdominal cavity; a very large respiratory cavity, divided in
two by an incomplete horizontal partition.

Animals of this genus are oviparous; producing an egg nearly as large as
that of a pigeon, in which is found the young animal complete, and in a
perfectly formed shell.

_Shell._ This genus appears to partake of the characteristics, both of
the Paludina and the Natica, being fluviatile and frequently attaining a
large size; spire very short, the last whorl much larger than all the
others together; globular, very ventricose, umbilicus small, forming a
compressed funnel-shaped aperture, without interior callosity; aperture
longer than broad, with margins united; columellar lip thickened,
projecting and reflected over the umbilicus; operculum horny. Inhabits
the rivers of Europe. Thirteen species.

 Ampullaria vivipara.
 A. fasciata.
 A. rugosa.
 A. canaliculata.
 A. effusa.
 A. virens.
 A. avellana.
 A. fragilis.
 A. Guinica.
 A. carinata.
 A. intorta.
 A. conica.

        ·       ·       ·       ·       ·

 A. Pealiana.*


                               FAMILY XI.

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