70 THE CANADIAN ENTOMOLOGIST 
nent slender arm (as in macrolahis) this expanded on its apical 
half into a flattened, paddle-like blade that is unarmed. 
Habitat. — Western Arctic America, south along the mountains 
into New Mexico. 
Holotype.— d", White Mts., N. Mex.; highest summit (11,092 
ft.) Aug.- 14, (C. H. T. Townsend). 
Paratopotype.—d^, South Fork of Eagle Creek, Alt. 8,000 ft. 
Aug. 13, (C. H. T. Townsend). 
Paratypes.—d', Saldovia, Alaska, July 21, 1899, (Trevor 
Kincaid) Harriman Exped., 1899. Previously reporte 1 by Co- 
quillett as T. macrolabis Lcew.; cf , Hudson Bay Territory (Loew. 
collection in the M. C. Z., part of the type-material of macrolahis) . 
Type in the collection of the U. S. National Museum. 
Tipula coracina, sp. n. 
Coloration black and yellow; wings whitish subhyalinc; male 
hypopygium simple in structure. 
Male. — Length 9.8 mm.; wing 11.4 nim. 
Frontal prolongation of the head short, black; nasus stout. 
Palpi dark brownish black. Antennae blackish brown, the flagellar 
segments cylindrical, not incised; verticils very short, first flagellar 
segment with these bristles scattered, the remaining segments 
having them basal in position. Head black, finely punctured. 
Eyes with rather coarse ommatidia. 
Pronotal scutum black; scutellum bright >'eIlow on either side 
of the infuscated dorso-median depression Mesonotal prccscutum 
black, the interspaces with a few scattered paler hairs; scutum 
black except on the sides behind the wing-root where it is obscure 
yellowish; scutellum and postnotum black. Pleura dark brown- 
ish black, the extensive dorso-pleural membranes yellowish. 
Halteres brownish yellow. Legs with the coxa? and trochanters 
black; femora yellowish basally, the remainder of the legs dark 
brown. Wings whitish with a pale brownish tinge; stigma 
ill-defined, brownish; veins dark brown. Venation; Ri short, 
straight; Ri+z longer than R2 alone; cell M\ open in both wings 
by the partial atrophy of vein Mi; cross vein M very long and 
prominent, inserted just beyond the fork of M on Af3+4. 
Abdominal tergites and sternites dark brownish black, the 
segments broadly margined laterally and caudally with yellowish, 
Hypopygium simple, small; niiuh tergite m^oderate in s'z.-; ninths 
