THE CANADIAN ENTOMOLOGIST 167 



Female. — Length about 20-21 mm.; wing 18.5-19 mm. 



Frontal prolongation of the head brownish grey. Palpi dark brown. 

 Antenna.^ with the scape reddish brown, the flagellar segments uniformly dark 

 brown. Head dark grey. 



Mesonotal pra^scutum light grey with four greyish brown stripesi scutellum 

 and postnotum clear light grey. Pleura heavily greyish white pruinose. 

 Halteres light brown. Legs with the cox£e yellowish, sparsely grey pruinose; 

 trochanters and femora light brown, the latter darkened at the tips; tibiae yel- 

 lowish brown, the tips darkened; tarsi brown. Wings with a faint yellow 

 suffusion; base of the wing and the stigmal region yellowish, this latter including 

 the apex of the costal cell, the apex of cell 1st Ri and most of cell 2nd Ri; 

 costal and subcostal cells brownish; veins dark brown. Venation: Petiole of 

 cell M\ short. 



Abdomen yellowish; segment eight and the basal half of nine in the male 

 dark brown; a very distinct, dark brown, median stripe on both the tergites and 

 sternites; on the former it begins at about midlength of the first tergite as a 

 narrow line, gradually widening behind; these stripes are continuous except 

 for narrow yellowish silvery posterior margins to the segments. Male hypo- 

 pygium with the sclerites fused into an almost continuous ring. Eighth tergite 

 concealed beneath the seventh, except laterally. Ninth tergite extensive, the 

 posterior margin with a broad median notch, the lateral angles subacute, black- 

 ened; on either side of the median line is a small obtuse knob; the ventral margin 

 of the ninth tergite bears two median blackened points. Region of the ninth 

 pleurite long and narrow. Outer pleural appendage broad and flattened, pale, 

 A^ery narrow at the base. Inner pleural appendage complicated in structure. 

 At the ventral angle of each pleurite hangs a very long, pendulous lobe, pale, 

 directed ventrad, slightly enlarged distally and here provided with long, coarse 

 hairs; the dorsal end of this appendage is likewise slightly produced. Between 

 these pendulous lobes a flattened, elongate oval disk is visible. 



The female is similar to the male, differing in the sexual characters; the 

 dorsal abdominal stripe is narrower and attains the end of the seventh tergite. 

 Ovipositor with the tergal valves straight; sternal valves very short, high, 

 obtusely rounded at their tips, a little more than one-half the length of the 

 tergal valves. 



Habitat.- — Colorado (Saguache County). 



Holotype. — cf, Cochetopa National Forest, LIpper Saguache Ranger Sta- 

 tion, September 7, 1917, (A. K. Fisher). 



Allotopotype. — 9. 



Paratopotypes.—S 9 's. 



Type in the United States Biological Survey collection. 



T. pendulifera is a well-defined species, allied to T. cunctans and T. carinata, 

 from which it is easily told by its larger size, and the conspicuous pendulous 

 lobes of the male hypopygium. 



Tipula noveboracensis, new species. 



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

 short, dark brown; wings with cells M\, M2, Cm and most of il/s brown; male 



