168 THE CANADIAN ENTOMOLOGIST 



hypopygium with a powerful curved clawlike horn on either side of the median 

 lobe of the ninth tergite. 



Male. — Length, 18-22 mm.; wing, 20.5-25.5 mm. 



Close to T. caloptera Lw., differing as follows: 



Anterfnal fiagellum short, darker, almost uniformly dark brown, the first 

 segment a little paler. 



Ground colour of the thorax, including the pleura, bright silvery white. 

 Praescutal stripes darker, the lateral stripes more or less confluent anteriorly 

 with the median stripe, the pale ground interspaces indicated near the suture. 

 Wings with the brown markings darker and differently arranged: cell 1st M2 

 and the apical two-thirds of R5 hyaline, cells Mi, M2, Cui and all but the extreme 

 base of Ma brown; in T. caloptera the white area includes the basal half of cell 

 1st M2, the bases of cells Mi, Mi and Ma and the apical half of cell Rh; the brown 

 in the base of cell M is about equally extensive in the two species. 



The abdominal pattern is more contrasted than in T. caloptera, the broad, 

 lateral stripe being almost black; in the holotype, the ground colour of the 

 tergites is yellowish on the first two segments only, on the remaining segments 

 passing into grey; in the paratypes, however, the bright yellow colour persists 

 to the fifth or sixth segments; in all cases the black, lateral stripes are narrowly 

 connected across the caudal ends of the segments; the lateral margins of the 

 tergites are broadly silvery, more buffy near the end of the abdomen. Male 

 hypopygium conspicuously different from the other members of the tricolor 

 group, the narrow, rectangular, somewhat depressed, median lobe with parallel 

 sides being subtended on either side by a powerful, slightly curved clawlike 

 horn which is sometimes slightly roughened. 



Habitat. — Northeastern North America. 



Holotype.— d^, Power-house Creek, near Gloversville, Fulton Co., New 

 York, altitude 1,000 feet, June 24, 1916, (C. P. Alexander). 



Paratopotypes, 2 c?"s; paratypes, cf , Ithaca, Thompkins Co., New York, 

 May 12, 1915, (C. P. Alexander); d". May 24, 1898, pinned with the cast pupal 

 skin; cf 's, Beaver Dam, New Brunswick, June 23, 1914, (J. D. Tothill). 



Type in the collection of the author. 



The type and paratopotypes were found resting on small boulders pro- 

 jecting from the bed of a small mountain stream. The flight of these large, 

 beautiful crane-flies is unusually vigorous for a member of this family. 



Tipula calopteroides, new species. 



Belongs to the tricolor group, closest to T. caloptera Lw. ; antennal flagellum 

 long, clearly bicolorous; mesonotal prascutum with the stripes dull grey, not 

 distinctly margined with darker; wings with the base of cell M clear. 



Female. — Length about 25 mm.; wing 25.3 mm. 



Close to Tipula caloptera Lw., diftering as follows: 



Antennae longer, distinctly bicolorous, the basal enlargement of the flagellar 

 segments dark brown, remainder of the segments yellowish. 



Mesonotal prescutal stripes dull grey, very indistinct, the usual dark 

 margins scarcely evident; the brown median vitta very distinct. Wings with 

 considerably more pale markings than in T. caloptera, more nearly approaching 

 the type of T. strepens; the brown in the base of cell M practically lacking 



