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Published online by Cambridge University Press: 31 May 2012
In November, 1867, I received from my esteemed friend, the late B. Billings, of Ottawa, several specimens of the larva of that very rare arctian, A. parthenos, which he had reared from eggs laid by a captured female in a box. They were apparently about two-thirds grown, and ready to hybernate for the winter ; a common practice with many species belonging to this interesting family of moths.
The length of this larva was l¼ inches, body cylindrical.
Head medium sized, bilobed, black and shining, with a few brownish hairs.
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