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"The species of the genus <em>Clio</em>, belonging to this order, exist in prodigious numbers in the Arctic and Antarctic seas. So great, in fact, is their abundance, that although they do no exceed an inch in length, they furnish a great part of the food of the whale-bone fishes." &mdash; Goodrich, 1859

Clio borealis

"The species of the genus Clio, belonging to this order, exist in prodigious numbers in the…