. The Australian zoologist. Zoology; Zoology; Zoology. TILLYARD AND FRASER. 383 Selys, Orogomphus, but it is doubtful if it can be separated from Chloro- gomphus by any individual characters. There are no Australian species. 3. Subfamily Aeshnidiinae. (Fig. 12.). CuP IA Fig. 12.—Wings of Aeshnidiinae (Aeshnidiopsis fUndersiensis Wood). This subfamily is erected to contain three fossil genera which are characterized by possessing a long ovipositor similar to that of the Cordule- gasterinae; the eyes are more widely separated than in this subfamily and the discoidal cells vary in the wings as in
. The Australian zoologist. Zoology; Zoology; Zoology. TILLYARD AND FRASER. 383 Selys, Orogomphus, but it is doubtful if it can be separated from Chloro- gomphus by any individual characters. There are no Australian species. 3. Subfamily Aeshnidiinae. (Fig. 12.). CuP IA Fig. 12.—Wings of Aeshnidiinae (Aeshnidiopsis fUndersiensis Wood). This subfamily is erected to contain three fossil genera which are characterized by possessing a long ovipositor similar to that of the Cordule- gasterinae; the eyes are more widely separated than in this subfamily and the discoidal cells vary in the wings as in the Chlorogomphinae. The wings are said to possess a subtrigone, but it is evident from its formation that it is not the same triangle common to the Aeshnidae, and, in most cases, is open posteriorly. The reticulation is very close in at least two of the genera; in the Australian form Aeshnidiopsis Tillyard, the venation is so close that there are two rows of cells between the costa and subcosta and a sector intercalated between these two main veins; only in the Australian genus Telephlebia do we find anything approaching such a condition. The three genera forming the subfamily have been placed in the Aeshnidae but because of the Cordulegasterine ovipositor, as well as the widely separated eyes, I have transferred them to the present family. Genera are: Aeshnidium West., Urogomphus Handl., and Aeshnidiopsis Tillyard (Upper Jurassic and Cretaceous), the latter from Queensland Cretaceous. Tillyard (Biology of Dragonnies) states:—"The Aeshnidiinae seem to have died out in Cretaceous times; unless, indeed, the recent Chlorogomphus be a close ally or a descendant from them". I think that they are to be regarded as an annectant group between the two recent sub- families of which they share the characters about evenly balanced. If so, then the Chlorogomphinae are the most recent forms in this complex, which may explain their comparative isolation within well-defined bou
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