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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

Science

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

MELANIANA. Three genera.


                       1. Genus _Melania_. Pl. X.

_Animal._ See Helix.

_Shell._ Turreted; aperture entire, spire slightly pointed, margin of
the whorls often surmounted by spires, columella smooth and arched,
closed by a thin horn-like operculum; this is a fluviatile shell, often
covered by a thick epidermis. Inhabits the rivers of India. Many fine
species are found in America. Fifty-four species.

 Melania inquinata.
 M. asperata.
 M. spinolusa.
 M. gronifera.
 M. aurita.
 M. lineolata.
 M. trunculata.
 M. carinefera.
 M. truncata.
 M. coarctata.
 M. punctata.
 M. subulata.
 M. Helvetica.
 M. lineata.
 M. Byronensis.
 M. sulcata.
 M. lævigata.
 M. clavis.
 M. decollata.
 M. amarula.
 M. thiarella.
 M. fasciolata.
 M. lævissima.
 M. corrugata.

        ·       ·       ·       ·       ·

 M. Troostiana.*
 M. plicifera.*
 M. Sayii.*
 M. elevata.*
 M. armigera.*
 M. multilineata.*
 M. proxima.*
 M. Hydeii.*
 M. salebrosa.*
 M. bitaeniata.*
 M. lema.*
 M. nassula.*
 M. trochiformis.*
 M. elevata.*
 M. laqueata.*
 M. semicarinata.*
 M. subularis* (_Lea_).
 M. acuta.* „
 M. plicata.*
 M. inflata.*
 N. conica.*
 M. catenaria.*
 M. simplex.*
 M. excurta.*
 M. annulifera.*
 M. pyrenella.*
 M. coma.*
 M. alveare.*
 M. cylindracea.*
 M. vestita.*
 M. caniculata.*
 M. Virginica.*
 M. tuberculata* (_Lea_).
 M. elongata.* „


                       2. Genus _Pirena_. Pl. X.

_Animal._ Much elongated, mantle prolonged into a canal at the left
side, but without distinct tube; foot short, oval, with an anterior
marginal furrow; head terminated by a depressed proboscidiform muzzle;
tentacula very distant, thickly annulated, dilated in the inferior half
of their length, and having the eyes at the summit of this dilation;
mouth a terminal and vertical slit, without labial tooth, and with a
very small tongue; a single long and narrow branchia.

_Shell._ Distinguished from the preceding genus by having a sinus at the
base, and another at the summit; turreted; aperture longitudinal, right
lip sharp, base of the columella inclined to the right. Inhabits the
rivers of India and Africa. One species is found in America. Six
species.

 Pirena terebralis.
 P. cancellata.
 P. aurita.
 P. spinosa.
 P. granulosa.

        ·       ·       ·       ·       ·

 P. scalariformis.*


                     3. Genus _Melanopsis_. Pl. X.

_Animal._ As preceding genus.

_Shell._ The Melanopsis is distinguished from the Melanaia, by the
columella being callous in the upper part, and the base truncated as in
the Achatina, and differs from the Pirena in having only a sinus or
widened opening at the base of the shell; aperture covered by a horny
operculum. Inhabits the rivers of the Archipelago. Three species.

 Melanopsis costata.
 M. lævigata.
 M. prærosa.


                               FAMILY X.

                      PERISTOMIANA. Three genera.


                       1. Genus _Valvata_. Pl. X.

_Animal._ See Helix.

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