70 THE CANADIAN ENTOMOLOGtST 



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.~&, White Mts., N. Mex.; highest summit (11,092 

 ft.) Aug. 14, (C. H. T. Townsend). 



Paratopolype.—&, South Fork of Eagle Creek, Alt. 8,000 ft. 

 Aug. 13, (C. H. T. Townsend). 



Paratypes.— d^ , Saldovia, Alaska, July 21, 1899, (Trevor 

 Kincaid) Harrirhan Exped., 1899. Previously reporter! by Co- 

 quillett as T. macrolahis Loew.; 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 subhyaline; male 

 hypopygium simple in structure. 



Male. — Length 9.8 mm.; wing 11.4 mm. 



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 yellow on either .-ide 

 of the infuscated dorso-median depression Mesonotal prsescutum 

 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; v^eins 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 Mz+_i. 



Abdominal tergites and sternites dark brownish black, the 

 segments broadly margined laterally and caudally with yellowish, 

 Hypopygium simple, small; ninth tergi.te moderate in siz?; ninth 



