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.
Poe, Edgar Allan
Mollusks
_Shell._ More elongated and inequilateral than in the _Tridacna_, the
anterior side being longer than the posterior; the posterior slope
closed with a dentated margin. Inhabits the Indian seas. One species.
Hippopus maculatus.
FAMILY XVI.
MYTILACEA. Three genera.
1. Genus _Mytilus_. Pl. VIII.
_Animal._ Body oval, somewhat inflated; mantle open in its inferior half
only, and terminated posteriorly by an oval cleft with fringed edges; a
linguiform, canaliculated, abdominal appendage, with a byssus at its
base behind, and several pairs of retractile muscles; mouth with simple
lips; two contractile muscles, of which the anterior is very small.
_Shell._ Of a serrated tissue, elongated, more or less oval, sometimes
subtriangular, equivalve, summits anterior, more or less curved, sloping
inferiorly in a slight degree; hinge toothless, or with two very small
rudiments; ligament dorsal, linear, subinterior, inserted in a narrow
and very long furrow; two muscular impressions, of which the anterior is
very small, besides those of the retractile muscles. Inhabits the
British and American seas. Forty-two species.
Mytilus erosus.
M. decussatus.
M. elongatus.
M. Zonarius.
M. violaceus.
M. smaragdinus.
M. edulis.
M. Hesperianus.
M. exustus.
M. ovalis.
M. Domingensis.
M. Afer.
M. ungularis.
M. borealis.
M. augustanus.
M. lacunatus.
M. incurvatus.
M. abbreviatus.
M. Magellicanus.
M. crenatus.
M. hirsutus.
M. latus.
M. ungulatus.
M. opalus.
M. corneus.
M. retusus.
M. perna.
M. bilocularis.
M. ustulatus.
M. Senegalensis.
M. achatinus.
M. planulatus.
M. Galloprovincialis.
M. lineatus.
M. canalis.
M. sanguineus.
· · · · ·
M. hamatus.*
M. croceus.*
M. cubitus.*
M. lateralis.*
M. Californianus.*
M. leucophœatus.*
2. Genus _Modiola_. Pl. VIII.
_Animal._ As above.
Separated by Lamarck from the Mytilus, on account of its being more
transverse than longitudinal, the beaks instead of being terminal are
placed beneath the apex.
_Shell._ Smooth, subtransverse, equivalve, regular, subtriangular,
posterior side short; summits nearly lateral; hinge toothless, linear
and lateral; ligament partly interior, situated in a marginal furrow;
one sublateral, elongated muscular impression in each valve. Inhabits
the British and American seas. Thirty-two species.
Modiola Guyanensis.
M. pulex.
M. discors.
M. cinnamorea.
M. plicata.
M. lithophaga.
M. Adriatica.
M. discrepans.
M. trapezina.
M. silicula.
M. semen.
M. lævigata.
M. Papuana.
M. tulipa.
M. albicosta.
M. vagina.
M. picta.
M. sulcata.
M. plicatula.
M. semifusca.
M. purpurata.
M. barbata.
M. caudigera.
M. squamosa.
M. securis.
· · · · ·
M. Americana.*
M. castanea*
M. opifex.*
M. capax.*
M. recta.*
M. Carolinensis.*
M. semi-costata.*
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