Westwood, J.O. 1840 . An introduction to the modern classification of insects; founded on the natural habits and corresponding organization of different families. Vol. II. Longman, Orme, Brown, Green and Longmans London 587 pp.

Notes: The first section of this volume is a brief general review of scale insects and proposals such as Pseudo-Coccus for cochineal; Pseudococcus for Coccus adonidum, cacti, etc. A separately numbered 158-page section at the end is called "Synopsis of the genera of British Insects".