A sharply defined, natural group of the genus Tipula Linnaeus, characterized as follows: Hypopygium of the male—the genital chamber widely open above, (P1. I, Figs. 1, 2, 3, 4, 5, 6, 6a). The ninth tergite relatively short, the ninth sternite much prolonged beyond the former. The ninth tergite deeply incised in the middle (except madina), the sides emarginate, the lateral portion more or less distinctly incurved beneath, (P1. I, Fig. 6e). The incurved margin generally ends in a sharp spine, (P1. I, Fig. 6c), visible in some species (impudica, dimidiata. PI. I, Figs. 6b, 8) from above. From the lateral inflexed margin extends a thin shelf or lamina, which bears in the middle a process, compressed and sharply pointed, (except pyramis pellucida, where it is broader and obtuse), the upper margin of which fits into the median incision of the tergite, (P1. 1. Figs. 6b, 6c, 8, 9). This process I designate as the subtergal process. Ninth sternite ample, more or less deeply emarginate. Pleurites ample, subtruncate or more or less cone-shaped. Pleural suture present, abbreviated (P1. I, Fig. 1a). The outer apical appendages are small and inconspicuous, narrowly lanceolate, curved cephalad, the apices abut into or lie hmcath the lateral emargination of the ninth tergite, P1. I, Figs. 1, 2, 3, 4, 5, 6, 6a). The inner apical appendages more conspicuous, the posterior portion laminate and subcautinous with the lower apical appendages; the anterior portion is elevated and consists of two more or less distinct, narrow perpendicular blades (P1. I, Fig. Ia), which are strongly chitinized and the anterior end of the inner blade overlaps the anterior end of the outer. The lower apical appendages are conspicuous and present the principal aspect of the genital chamber. As stated above, they appear to be sub-continuous with the inner apical appendages and both arise from the inner surface of the ninth pleurites; laminate in form, the basal portion broadly horizontal, the apical part more or less convoluted, generally emarginate within and without, (P1. I, Figs. 1, 2, 3, 4, 5, 6, 10), having somewhat the shape of a ploughshare. In a few species (diversa, lyrifera, P1. I, Figs. 1 and 2), they are narrowly lanceolate and extend conspicuously beyond the ninth sternite.