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Organization of the mussel.

Byssus, mantle and oviduct of the Mytilus

Organization of the mussel.

"Only six actually living species of the genus have been found; these inhabit the Indian Ocean, the Australian seas, and the Pacific Ocean. The interior of the pearl oyster-shell affords the most exquisite pearls."

Malleus Alba (Lamarck)

"Only six actually living species of the genus have been found; these inhabit the Indian Ocean, the…

"On the shores of the Mediterranean and along the Atlantic coast, species of the genus <em>Pectunculus</em> are abundant. When taken alive, the animal sometimes exudes a thick mucous liquid over the shell, which has disgusted many a young collector with his capture."

Pectunculus Scriptus (Lamarck)

"On the shores of the Mediterranean and along the Atlantic coast, species of the genus Pectunculus…