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. 24) a large, 
pale brown lobe, flattened, at the tip produced into a long, curved point that 
is slightly expanded at its tip, the inner face ^^^th abundant long, pale hairs. 
Ninth sternite extensive, a deep split on the mid-ventral line, the margins 
closely approximated or contiguous. 
The following ten specimens are in the collection: 
Locahties: Nos. 434, 435, 436, and 438, west of Kongenevik, Camden bav, 
Alaska, July 4, 1914. Nos. 1194, 1195, Collinson point, Alaska, June 22-23, 
1914. Nos. 422, 423, 822, and 828, Bernard harbour. Northwest Territories, 
July 1-14, 1916, and in July-August, 1915. 
The most conspicuous differences between this species and the next, S. 
parrio'ides, are in the dense erect pile of the present species, the clear blue grey 
colouration, the conspicuous differences in the structure of the antennae and 
hypopygium of the male sex, etc. 
S. bergrothi Williston^ 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 A\dngs uniformly tinged ^vith 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 Hght 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 Ml very short or lackiiig; pile on the body short, not conspicuous as in 
pairii. 
Male. — Length, 14-15 mm.; wing, 11-12 mm. 
Palpi short, dark brown. Frontal prolongation of the head light brown, 
short; nasus distinct. Antennae (PI. 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; genae 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 Ml sessile (as in the genus Nephrotor)ia) or ver}' short-petiolate. 
Abdominal tergites reddish brown with a broad, distinct, dark brown, 
median line; caudal margins of the segments less distinctly bro'wnish; 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. 
