. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 158 bulletin: museum of comparative zoology Leptogomphus unicornis Ndm. A study of the wings of the single known specimen of this species shows it to have been misplaced in the Manual in the genus Davidius. It has more in common with Leptogomphus, including (1) the form of the wings; (2) the lack of brace vein to the stigma; (3) the trigonal interspace regularly widening outward to the wing margin; (4) the small triangles; (5) the narrow fore wing subtriangle; (6) the little ex- panded anal area of the wing; and (7) t
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 158 bulletin: museum of comparative zoology Leptogomphus unicornis Ndm. A study of the wings of the single known specimen of this species shows it to have been misplaced in the Manual in the genus Davidius. It has more in common with Leptogomphus, including (1) the form of the wings; (2) the lack of brace vein to the stigma; (3) the trigonal interspace regularly widening outward to the wing margin; (4) the small triangles; (5) the narrow fore wing subtriangle; (6) the little ex- panded anal area of the wing; and (7) the 3rd anal interspace (z) longer in the axis of the wing than wide. All these I regard as primitive characters, of relative Fig. 4. Wings of ?Leptogomphus unicornis Ndm. It seems to differ from Leptogomphus as represented by its type species, L. sauteri Selys, in having but a single row of very large paranal cells in the fore wing, in having no basal subcostal antenodal crossvein, and in having crossveins in all the triangles and in the supratriangular space of both the wings. I present a figure of the vena- tion to call attention to these discrepancies. At first glance they seemed to me to be so great as to call for generic separation; but on further experience with the Epigomphus alliance, I think they are very un- reliable variants, having only specific Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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