The Comparative Ethology and Evolution of the Sand Wasps. Howard E. Evans. Cambridge: Harvard University Press, 1966. xviii, 526 pp. $15.00.

Excerpt: In one sense, ethology is natural history. In a more restricted sense, it is the description and classification of behavior viewed as a necessary prerequisite to analysis. The analyses that follow become more and more physiological as the tangle of facts unravels so that the ethology of the field inevitably becomes the ethology of the laboratory