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Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Coral Pecten.

Pecten Foliaceus.

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Coral Pecten.

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Northern Pecten.

Pecten Islandicus (Chemnitz.)

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Northern Pecten.

"The Watered Pecten belongs to the scallop-shells. The shell is generally nearly circular, more or less elongated, and terminated toward the summit in a straight line."

Pecten Pseudamussium (Chenu.)

"The Watered Pecten belongs to the scallop-shells. The shell is generally nearly circular, more or less…

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Purple Pecten.

Pecten Purpuratus (Lamarck.)

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Purple Pecten.

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Tiger Pecten.

Pecten Tigris (Lamark.)

Smooth-shelled Pectens have colors that are frequently lively and brilliant. This is the Tiger Pecten.

"The genus <em>Pinna</em> was so called from its resemblance to the plumelet which the Roman soldiers attached to their helmets. The animal is thick, elongated, with mantle open behind, presenting a conical, furrowed foot, bearing a considerable byssus."

Pinna Bullata (Swainson)

"The genus Pinna was so called from its resemblance to the plumelet which the Roman soldiers…

"The genus <em>Pinna</em> was so called from its resemblance to the plumelet which the Roman soldiers attached to their helmets. The animal is thick, elongated, with mantle open behind, presenting a conical, furrowed foot, bearing a considerable byssus."

Pinna Nigrina (Lamarck)

"The genus Pinna was so called from its resemblance to the plumelet which the Roman soldiers…

"The genus <em>Pinna</em> was so called from its resemblance to the plumelet which the Roman soldiers attached to their helmets. The animal is thick, elongated, with mantle open behind, presenting a conical, furrowed foot, bearing a considerable byssus."

Pinna Nobilis, with its byssus (Linnaeus)

"The genus Pinna was so called from its resemblance to the plumelet which the Roman soldiers…

"The genus <em>Pinna</em> was so called from its resemblance to the plumelet which the Roman soldiers attached to their helmets. They are of a brown, smoky color, with a fibrous, horny shell, very thin and fragile."

Pinna Rudis (Linnaeus)

"The genus Pinna was so called from its resemblance to the plumelet which the Roman soldiers…

"The more remarkable species of the genus <em>Spondylus</em>; their valves are unequal."

Spondylus Crassisquama (Lamarck.)

"The more remarkable species of the genus Spondylus; their valves are unequal."

"The more remarkable species of the genus <em>Spondylus</em>; their valves are unequal."

Spondylus Gaederopus (Lina.)

"The more remarkable species of the genus Spondylus; their valves are unequal."

"The more remarkable species of the genus <em>Spondylus</em>; their valves are unequal."

Spondylus Imperialis (Chemn.)

"The more remarkable species of the genus Spondylus; their valves are unequal."

"The more remarkable species of the genus <em>Spondylus</em>; their valves are unequal. A native of the Indian Ocean and rarely met with."

Spondylus Regius (Linn.)

"The more remarkable species of the genus Spondylus; their valves are unequal. A native of…