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The first appearance of man, or, to be more precise, the development of man from some closely-related group of apes, probably falls in either the miocene or the pliocene period, the middle or the last section of the Tertiary period.
This last Anthidium is the victim also of the Unarmed Zonitis. Thus we have two closely-related exploiters for the same victim. Bramble-bees and Others: chaps. i., iii. and x. Bramble-bees and Others: passim. During the last fortnight of July, I witness the emergence of the Burnt Zonitis from the pseudochrysalis. The latter is cylindrical, slightly curved and rounded at both ends.
To account, upon these principles, for the gradual elimination and segregation of nearly allied forms such as varieties, sub-species, and closely-related or representative species also in a general way for their geographical association and present range, is comparatively easy, is apparently within the bounds of possibility. Could we stop here we should be fairly contented.
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