«In this volume, the author defends the view that species form a real unit in rerum natura, serving as a unit central to understanding the origin and dynamics of biological diversity. Barraclough argues that individuals within the same species interact and evolve interdependently, while individuals belonging to distinct species evolve independently. And he maintains that we observe this phenomenon in the discrete clustering of genetic and phenotypic variation . . . The Evolutionary Biology of Species is aimed at graduate-level students and researchers. The work is, however, clearly written, and the author provides a glossary of important nomenclature. More generally, individuals with an interest in systematics will find much in Barraclough's work, worthy of interest and critical thought.»

Jeremy S. Kirkby, Albion College, Michigan, The Quarterly Review of Biology