Book reviewed in this article:Nikam, J. B.&Khole, V. V. 1989.Insect spiracular systems.K. G. Adiyodi&R. G. Adiyodi (eds). 1989.Reproductive biology of invertebrates, Vol. IV. Fertilization, development and parental care, Part A.Ax, P. 1987.The phylogenetic system.—The systematization of organisms on the basis of their phylogenesis.Translated by R. P. S. Jefferie