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Published online by Cambridge University Press: 31 May 2012
Before describing Noctuidæ the structure of the front or clypeus, between the compound eyes, must be examined. In a few genera it has a projection, or again a cup-like depression. The presence of ocelli, behind the antennæ, must be ascertained, and the compound eyes must be viewed under the microscope to see if the surface is naked or hairy.