Crane-flies Ho 



dorsad. Eighth sternite with the caudal margin broadly concave, the lateral 

 angles bearing small tufts of hairs. 



The female is similar but of a less heavy build; the abdominal tergites 

 have the same orange-yellow stripes on either side of the broad median area, 

 these most conspicuous on segments three to five where they appear as bright 

 triangles. 



Locality: Holotype, cf, Bernard harbour, Northwest Tcrritori.-. .July 1-1 1. 

 1916 (F. Johansen). No. 425. Allotopotype, 9, July, August, 191."). No. 823. 

 Paratopotypes, five f, 9, Nos. 419, 429, July 1-14, 1916; Nos. 824, 825, and 

 827, July-August, 1915. 



This interesting Arctic Nephrotoma belongs to the same group as the 

 Palaearctic N. pratensis (Linnaeus) and N. nox (Riedel) and the N '. penumbra 

 Alexander from the high mountains of Northeastern North America. I have 

 seen specimens of a species of this same group from Greenland that are close 

 to pratensis but seem to represent a new species. 



Genus Tipula Linnaeus. 



Tipula Linnaeus; Systema Naturae, edition 10, p. 585; 1758. 



The present collection included seven species of this genus, the only des- 

 cribed one being the common and apparently widely distributed Tipula arctica 

 Curtis. I expected that T. pratorum Kirby 1 would be found amongst tho 

 material but such was not the case, there being no species having the antennal 

 scape yellow. The only species in this collection with any yellow on the antennae 

 is T. diflava which does not agree at all with Kirby's rather unsatisfactory 

 description. 



Tipula johanseni, n. sp. 



Antennae black; head grey, along the inner margin of the eye broadly paler; 

 thoracic dorsum with four dark brown stripes; wings with the tip of vein 

 Rz pale, subatrophied; crossvein m obliterated by atrophy. 



MALE. Length, 11-8 mm.; wing, 12-4 mm. 



Palpi black. Frontal prolongation of the head dark grey, the nasus short, 

 blunt. Antennae (PI. II, fig. 15) black; first segment of the scape relatively 

 short, not as long as the first flagellar segment; flagellar segments rather elon- 

 gated, the basal swelling oval, shorter than the remainder of the segment. 

 Head dull grey, paler along the inner margin of the eye; sides of the veil ex 

 with scattered long, coarse bristles. 



Thoracic dorsum dull grey with four dark brown stripes, the median pair 

 narrow, separated from one another by a broad stripe of the ground colour. 

 Pleura dark grey, the dorso-pleural membranes dull yellowish. Halteres rather 

 long, brown, the knobs still darker brown. Legs with the coxae dull grey and 

 provided with long pale hairs; trochanters black; remainder of the legs broken. 

 Wings light grey, the costal and subcostal cells a little more yellowish; stigma 

 brown; an indistinct dark cloud at the tip of Rs; veins dark brown; venal ion 

 (PL I, fig. 11) tip of vein R% pale, subatrophied; crossvein m obliterated or 

 nearly so. 



Abdominal segments blackish, the caudal and lateral margins broadly 

 paler; hypopygium yellow. Male hypopygium withlhe ninth tergite (PL III, 

 fig. 32) not prominent, the sides oblique, the caudal margin very deeply split 

 by a V-shaped median notch that extends almost to the eighth tergite, the 

 lobes thus formed long, subacute. Ninth pleurite extensive, subtriangular, 

 the caudal angle extended out into a short blunt point; outer pleural appendage 

 not prominent, cylindrical to slightly flattened, with long golden hairs; inner 

 pleural appendage greatly compressed. Ninth sternite profoundly incised be- 



1 Fauna Boreali-Americana, Insecta, p. 310; 1837. 



