186 . C. JR. Osten Sacken: 



in ordinary Tipulae; front comparitively broad, with a large tu- 

 Ijercle above tbe antennae (comp, Westwood, Trans. Eiit, Soc. 1881, 

 Tab. 18, f. 9a; also Jaennicke, 1. c. f. 2a). 



Antennae of tbe male much longer than the body; ISjoiuted (?) 

 first Joint incrassate, second short, ringlike ; flagellum almost filiform, 

 the joints gradually increasing in length; I count J.0 joints on the 

 flagellum, but I believe there is, T'iptda-V\kQ^ a minute Joint at the tip; 

 the flagellum is clothed on the underside with a dense, microscopic 

 pubescence mixed at regulär iutervals with minut^ spine-like bristles 

 (conf. Westwood, 1. c. f. 9a); in M. vulpina these minute spines 

 are not visible. Antennae of the female not longer than the head, 

 13-jointed (according to Macquart and Westwood; I cannot count 

 the joints distinctly in my specimens); first Joint subcylindrical, joints 

 of the flagellum somewhat attenuate at base; the last four or five 

 joints much smaller; the whole flagellum beset with hairs, but not 

 verticillate (see Westw. 1. c. f. 9 b). 



Thorax of the ordinary structure (in M. ornatus Jaenn. it 

 seems to be larger and more gibbose than usual); collar well-deve- 

 loped, but without neck-like Prolongation, as the head is closely 

 applied to it; thoracic suture deeply marked. 



Abdomen, compared to that of an ordinary Tipula, stout and 

 Short; not club-shaped at the end; on the contrary the segment con- 

 tainiug the male forceps is narrower than the others; the small for- 

 ceps protrudes very little; the abdomen of the male differs but little 

 in shape from that of the female, the more so as the oyipositor does 

 not protrude ; on the underside of the last abdominal segment of the 

 female a pair of small, short, obtuse valvules are observable (I am 

 speaking of M, vulpinus). 



Legs Tipula-ViliQ.; tibiae with spurs; empodia present. 



Wings. Venation of a true Tipula-, the contact between the 

 fifth posterior cell and the discal nearly punctiform; second posterior 

 cell petiolate; the rhomboid cell between the margin and the tip of 

 the first vein small, but distinctly marked ; the proximal ends of the 

 submarginalj first posterior and discal cells are nearly equidistant 

 from the root of the wing; praefurca rather short; the proximal 

 edge of the stigma, within the marginal cell, shows a thickening 

 which has been mistaken for a vein, and has been so figured by 

 Jaennicke and Westwood. In all these characters M. vulpinus 

 agrees with the figures in Jaennicke, Westwood und Macquart. 



