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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

Hiatella Arctica.
 H. biaperta.


                    5. Genus _Isocardia_. Pl. VIII.

_Animal._ Body very thick: edges of the mantle finely papillaceous,
separated inferiorly, and united behind by a transverse band, pierced
with two orifices surrounded with radiating papillæ; foot small,
compressed, trenchant.

_Shell._ Free, regular, inflated, equivalve, very inequilateral, with
diverging summits, strongly flexed anteriorly and outwardly, in a
commencing spiral, hinge dorsal, long, similar, formed of two flat
cardinal teeth and one lamellous behind the ligament; ligament dorsal,
exterior, diverging anteriorly towards the summit; muscular impressions
very distant and small. Inhabits the Mediterranean and British seas.
Four living species. One fossil.

 Isocardia Moltikana.
 I. retusum.
 I. cor.
 I. semisulcata.


                               FAMILY XI.

                         ARCACEA. Four Genera.


                       1. Genus _Arca_. Pl. VIII.

_Animal._ Body thick, slightly variable in form; abdomen provided with a
pedunculated foot, compressed, fit for adhesion, and cleft throughout
its extent; mantle supplied with a simple row of cirri and slightly
prolonged posteriorly; buccal tentacula very small and very thin.

_Shell._ Somewhat diversiform, but most usually elongated and more or
less oblique at the posterior extremity, often very inequilateral;
summits more or less distant and little flexed to the front; hinge
anomalous, straight, or a little flexed, long, and formed by a line of
short vertical teeth, decreasing from the extremities to the centre;
ligament exterior, wide, nearly as much before as behind the summit; two
muscular impressions united by a band or palleal impression, not very
distinct. Inhabits the American and British seas. Forty-one living
species. Nine fossil.

 Arca semitorta.
 A. tetragona.
 A. sinuata.
 A. cardissa.
 A. retusa.
 A. ovata.
 A. scapha.
 A. fusca.
 A. Domingensis.
 A. trapezina.
 A. inequivalvis.
 A. tortuosa.
 A. Noæ.
 A. umbonata.
 A. avellana.
 A. ventricosa.
 A. sulcata.
 A. Helbingii.
 A. barbata.
 A. Magellanica.
 A. pisolina.
 A. callifera.
 A. bisulcata.
 A. senilis.
 A. auriculata.
 A. Cayennensis.
 A. antiquata.
 A. Braziliana.
 A. lactea.
 A. cancellaria.
 A. irudina.
 A. rhombea.
 A. corbicula.
 A. Indica.
 A. granosa.
 A. squamosa.
 A. pistachia.

        ·       ·       ·       ·       ·

 A. ponderosa.*
 A. pexata.*
 A. incongrua.*
 A. transversa.*


                     2. Genus _Cucullæa_. Pl. VIII.

_Animal._ As above.

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