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"The Paper-nautilus, or Argonaut, [floats] gracefully on the surface of the sea, trimming its tiny sail to the breeze, just sufficient to ruffle the surface of the waves, it looks like an exquisite living shallop."

Argonauto Argo (Linnaeus)

"The Paper-nautilus, or Argonaut, [floats] gracefully on the surface of the sea, trimming its tiny sail…

"The argonaut can blush, turn pale, and show through its transparent shell its body changing in sudden shades."

Argonauta Papyracea in its Shell

"The argonaut can blush, turn pale, and show through its transparent shell its body changing in sudden…

"The principal apparatus of progression of the animal is the funnel with which it is furnished, in common with all Cephalopods, and which is very long in the argonaut. Aided by this apparatus, it ejects water after it has served the purpose of respiration, and in doing so, projects itself through the water."

Argonauta Papyracea Swimming

"The principal apparatus of progression of the animal is the funnel with which it is furnished, in common…

"In one genera [of the <em>Octopodidae</em> family] the arms are completely united in their whole extent by a thin membrane."

Cirrhoteuthis Mulleri (Eschricht)

"In one genera [of the Octopodidae family] the arms are completely united in their whole extent…

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Brevipes (d'Orbigny)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Horridus (d'Orbigny)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Macropus (Risso)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Vulgaris (Lamarck)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

This creature, belonging to the <em>Octopodidae</em> family, "changes its color under any exertion, so that the animal at rest and in motion are two different beings."

Pinnoctopus Cordiiformis (Q. & G.)

This creature, belonging to the Octopodidae family, "changes its color under any exertion,…