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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

_Shell._ Thick, subinvolute, dilated in the middle, terminating in a
cone anteriorly and posteriorly; aperture very long and narrow;
terminated anteriorly by a canal more or less elongated and flexed;
edges parallel, the external dilating with age, presenting posteriorly a
gutter at its point of attachment with the spire, and, anteriorly, a
sinus behind the canal, through which the head of the animal passes;
operculum horny, long, and narrow; summit terminal. Found in the Indian
and Equatorial seas, and one species in Florida. Thirty-two living
species. Five fossil.

 Strombus gigas.
 S. latissimus.
 S. Canarium.
 S. vittatus.
 S. gallus.
 S. cristatus.
 S. bubonius.
 S. auris-Dianæ.
 S. pyrulatus.
 S. Luhuanus.
 S. colomba.
 S. troglodytes.
 S. urceus.
 S. lineatus.
 S. turritus.
 S. accipitrimus.
 S. tricornis.
 S. Isabella.
 S. epidromis.
 S. bituberculatus.
 S. dilatus.
 S. lentiginosus.
 S. pugilis.
 S. gibberulus.
 S. Mauritianus.
 S. succinctus.
 S. tridentatus.
 S. plicatus.
 S. papilio.
 S. marginatus.
 S. cancellatus.

        ·       ·       ·       ·       ·

 S. Floridus.*


                              FAMILY XIX.

                      PURPURIFERA. Eleven genera.


                    1. Genus _Cassidaria_. Pl. XII.

_Animal._ Somewhat elongated, widened anteriorly; mantle with simple
edges and provided with a distinct tube; foot very wide, elliptical,
sub-biolate anteriorly, and having a large operculum upon the dorsal
face of its posterior part; head wide and indistinct; tentacula
anterior, approximating at base, subcylindrical, and having the eyes at
two-thirds of their length; mouth inferior, concealed by the foot; two
pectiniform branchiæ, nearly parallel.

_Shell._ Subglobular, tuberculated or channeled, with a short, pointed
spire; aperture long, ovate, subcanaliculated anteriorly; right edge
folded back; columella covered by a wide, smooth callosity, uniting
posteriorly with the right edge. Inhabits all seas except the Northern.
Five living species. Seven fossil.

 Cassidaria echinophora.
 C. Tyrrhena.
 C. striata.
 C. oniscus.
 C. cingulata.


                      2. Genus _Cassis_. Pl. XII.

_Animal._ Spiral, with the foot (which is shorter than the shell)
rounded anteriorly; mantle provided, before the respiratory cavity, with
a long open canal, used as an organ of prehension; head furnished; a
single pair of blackish tentacula, having the eyes at an inflation about
half way from the base; mouth armed with a proboscis.

_Shell._ Inflated, oval, subinvolute; spire slightly projecting;
aperture long, oval, sometimes very narrow, terminated anteriorly by a
very short canal, sloped, and flexed obliquely towards the back;
columella covered by a large callosity, indented throughout its length;
operculum horny. Found in the Indian, Mediterranean, and Equatorial
seas. Twenty-five living species. Eight fossil.

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