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"Now Argus had a hundred eyes in his head, and never went to sleep with more than two at a time, so he kept watch of Io constantly." —Bulfinch, 1897

Argus

"Now Argus had a hundred eyes in his head, and never went to sleep with more than two at a time, so…

"The Shetland Argus, <em>Astrophyton scutatum, usually more than a foot across, is sometimes found on the British coast." &mdash; Goodrich, 1859

Shetland argus

"The Shetland Argus, Astrophyton scutatum, usually more than a foot across, is sometimes found on…

"Hermes kills Argus" &mdash; Gayley, 1893

Hermes Argus

"Hermes kills Argus" — Gayley, 1893

"Io, Argus, and Mercury" &mdash; Gayley, 1893

Io Argus

"Io, Argus, and Mercury" — Gayley, 1893

Native to Sumatra and India, the argus pheasant can measure up to five feet in length.

Argus Pheasant

Native to Sumatra and India, the argus pheasant can measure up to five feet in length.