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1o.

Les fpires peuvent être confiderées, 1°. par leur nombre, 2o. par
SPIRES. leur figure, 3. par leur fituation.

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2. Je confidere le fommet quant à fa grandeur comparée à celle de fenSOMMET. l'ouverture de la Coquille. 1o. Il peut manquer ou n'être pas fible. 2o. Il peut être plus court que l'ouverture. 3o. Il peut être égal à elle. 4°. Enfin il peut la furpaffer en longueur.

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UNIVALVES. OPERCULES.

0.

40.

Limaçons dont le fommet eft plus long que l'ouverture.

[blocks in formation]

Covet pl. 8. Kambeul. pl.1. Miga. pl. 8. Barnet. pl. 10. Vermet. pl.11.

Livon.
Kachin.

Miran. pl. 4.

Totombo.
Giton.

Jol.

Lifpe.

[blocks in formation]

Rafel.

[blocks in formation]
[blocks in formation]

Arvan.

Suga.

[blocks in formation]

Faval,

Silus.

Farois.

[blocks in formation]

On peut obferver trois chofes dans l'ouverture; 1o. fa forme; 2°. fon canal; 3°. fes lèvres ou fes bords.

3°. OUVERTU

RE.

[blocks in formation]

Coret. pl. 1. Sormet. pl. 1. Sakem. pl. 7. Goffon. pl. 1. Samier. pl. 8.

Pouchet.

Pietin.

O.

OPERCULES.

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Bulin.
Kambeul.

Labarin.

Goufol. pl. 9.

Pakel.

Narel. pl. 4. Siger.

[blocks in formation]

Sadot.

Porcelaine.

Staron.

Cerite.

Foffar. pl. 13. Liri.

[blocks in formation]

Goumier.

Natice.

Soron.

Minjac.

Bobi.

Nivar.

[blocks in formation]
[blocks in formation]

Gadin.

[blocks in formation]
[blocks in formation]

Mouret.

Ligar.

Dunat.

[blocks in formation]
[blocks in formation]

Gival.

Miga.

Majet. pl. 5.

Vermet pl. 11. Lagar.

Sulin.

Totombo.

Lupon.

Lifpe.

Selot.

[blocks in formation]

Bitou.

Dofan.

Kifet.

Jenac.

[blocks in formation]
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Lipin.

Sirat.

Jamar. pl. 6.

Daki.

Philin.

Bolin.

[blocks in formation]

Melar.

Tilin.

Ofilin.

Jatou.

Rafel.

pl. 9. Mafan.

Retan.

Cofar.

Nifat.

Coupeti

Vaffet.

Lofet.

Arvan.

Chotin.

[blocks in formation]

Suga.

Loman.

Sari.

Tafon.

Salar.

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