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A DISSERTATION ON NORTHERN BUTTERFLIES
Published online by Cambridge University Press: 31 May 2012
Extract
The Swallow-tai1 Butterflies which occur on the Islands of Anticosti and Newfoundland, and on the north coast of the Gulf of St. Lawrence are at present a subject of dispute, both as to species and position among the Papilionidæ. Having some knowledge of their localities and geographical range, I venture to state my opinion on the matter.
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- Copyright © Entomological Society of Canada 1874
References
* The specimen Mr. Innes gave me was from Newfoundland. He did not show me Mr. Crouper's specimens.—Ed. C. E.
* Note.—The insects of separate arctic regions have a great resemblance, and the difference between them increases in the successive concentric “circles from the above regions towards the equator. It has been said that the “advance of the glacial period was accompanied by the migration of insects “southwards, and that the present distribution of insects was effected by the prevalence of this epoch, and by the succeeding temperate epoch.”—F. Walker. F. L. s., in can. Ent. vol. iii, p. 148.