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ON THE CLYPEUS AND LABIUM OF PRIMITIVE INSECTS

Published online by Cambridge University Press:  31 May 2012

E. M. Walker
E. M. Walker
Affiliation:
Department of Biology, University of Toronto.
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Extract

The following observations and reflections on the primititive composition of the clypeus and labium of insects were made during the course of a study of the head capsule and its appendages, together with their musculature, of Grylloblatta and other orthopteroid forms.

Type
Articles
Information
The Canadian Entomologist , Volume 63 , Issue 4 , April 1931 , pp. 75 - 81
Copyright
Copyright © Entomological Society of Canada 1931

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References

1. This is not the view held by Mr. Snodgrass at the present time.