1V+66 pp., 15 textfigs. (Soc. int. odonatol. rapid Comm. No. 4). Utrecht, 1983. — Price: Hfl. 35.- net. — [A COMMENT], In a thorough and comprehensive study, the author reviews the theories about wing venation proposed by earlier workers. Based upon his own investigations and the literature, he proposes new homologies for the longitudinal veins and, as a consequence, also a new phylogeny of the odonatoids (fig. 9). To construct this, he has apparently not considered other structural and behavioural features of the Odonata, notably the structure of the penile organ and the ovipositor, and the mode of oviposition. An excellent study of the anatomy of the penile organ was published by H.K.. PFAU (1971, Z. Morph. Tiere 70: 281- -371). From Pfau’s paper it is evident that the penile organ of the Aeshnidae, probably also that of the closely related Neopetaliidae, represents a quite different and more primitive type than that of other anisopteran families. From this point of view, the two families form a well separated phylogenetic branch. This is confirmed by the mode of oviposition in the Anisoptera. Aeshnidae and probably also Neopetaliidae are the only anisopterans with a regular endophytic oviposition. The primitive Petaluridae, which also have a well developed ovipositor, do not introduce their eggs into plant tissue, but oviposit between mosses, or attach the eggs to roots and subterranean stems (cf. L.S. WOLFE, 1953, Trans. R Soc. N.Z. 80: 245-275, pis 53-57). This mode of oviposition was named "primar exophytisch” by D.ST. QUENTIN (1962, Z. Morph. Okol Tiers 51: 165-189), another important paper written in German. All other Anisoptera show reduced ovipositors and, therefore, some kind of "secondary exophytic oviposition".