Crane-flies 9 c 



a suboval flattened lobe, dull yellow in colour, slightly broader at the base than 

 at the tip which is obtusely rounded; the outer face of the appendage with 

 sparse, short, scattered hairs; inner pleural appendage (PI. II, fig. 21.) a lar^e. 

 pale brown lobe, flattened, at the tip produced into a long, curved point thai 

 is slightly expanded at its tip, the inner face with abundant long, pair hair-. 

 Ninth sternite extensive, a deep split on the mid-ventral line, the margin- 

 closely approximated or contiguous. 



The following ten specimens are in the collection: 



Localities: Nos. 434, 435, 436, and 438, west of Kongrnrvik. < 'amden hay. 

 Alaska, July 4, 1914. Nos. 1194, 1195, Collinson point, Alaska. June 25 

 1914. Nos. 422, 423, 822, and 828, Bernard harbour, Northwot Term 

 July 1-14, 1916, and in July-August, 1915. 



The most conspicuous differences between this species and the next. N. 

 parrioides, are in the dense erect pile of the present species, the clear blue givy 

 colouration, the conspicuous differences in the structure of the antennae and 

 hypopygium of the male sex, etc. 



S. bergrothi Williston 1 is unsatisfactorily described and the type is apparently 

 no longer in existence as was stated earlier in this paper. It is a blackish grey 

 species with the stem of the halteres and the bases of the femora reddish yellow 

 and the wings uniformly tinged with brownish. S. sordida Loew (Century 4, 

 No. 42; 1863) has the rostrum black as in the present species and agrees in some 

 other features, but is apparently a different species. 



Stygeropis parrioides, n. sp. 



Frontal prolongation of the head light brown; antennae short, the flagellar 

 segments with an inconspicuous transverse ridge before the middle, this bearing 

 a fringe of short, pale hairs; mesonotum greyish yellow with a narrow, dark 

 brown median line, the sternites and pleurites clear, light grey; abdominal 

 tergites with a broad, dark brown, median line; wings reddish brown; petiole 

 of cell MI very short or lacking; pile on the body short, not conspicuous as in 

 parrii. 



MALE. Length, 14-15 mm.; wing, 11-12 mm. 



Palpi short, dark brown. Frontal prolongation of the head light brown, 

 short; nasus distinct. Antennae (PL II, fig. 13) dark brown, segment one 

 elongate, transversely wrinkled; segment two cyathiform; segment three 

 elongate, broader distally; segments four to seven broad basally with a trans- 

 verse row of pale hairs before mid-length of the segments, on the ventral face 

 with one or two small spicules; terminal segments gradually attenuated. Vertex 

 greyish brown, with numerous black bristles that are lacking on the median 

 line; vertex produced forward on the median line into a tongue between the 

 antennal bases; gense with numerous black, bristle-like hairs. 



Mesonotal praescutum yellowish grey, brightest before the pseudosutural 

 foveae, the three usual thoracic stripes not distinct, only a very narrow dark 

 brown median line running the entire length of the mesonotum. Dorsal pleurites 

 concolourous with the notum; sternal pleurites and sternum clear light grey. 

 Halteres dark brown. Legs with the coxae clear light grey; trochanters brown: 

 femora brown; tibiae similar, darker at the tips; tarsi dark brown. Wings 

 with a strong reddish brown tinge, cells C and Sc more saturated; stigma brown; 

 the membrane along vein Cu more greyish; venation (PI. I, fig. 8) Rs elongate; 

 cell MI sessile (as in the genus Nephrotoma) or very short-petiolate. 



Abdominal tergites reddish brown with a broad, distinct, dark brown, 

 median line; caudal margins of the segments less distinctly brownish; a narrow, 

 sublateral, brown line; extreme lateral margins narrowly dull yellow. Sternites 

 somewhat similar, the basal two-thirds reddish brown, the apical third dark 



1 Kansas University Quarterly, vol. 2, p. 64; 1894. 



