8 Annals Entomological Society of America  [Vol. XIV, 
pollinose with a faint, median line. Pleura yellowish-gray, pollinose; 
pleuro-dorsal membrane yellowish. Legs slender, yellow;  pilosity 
coarse, short, blackish and somewhat appressed; femora and tibiz 
slightly infuscate before the apex, the tibize longer than the metatarsi; 
tarsi yellowish-brown. Wings subhyaline with a yellowish tinge, cell 
C. concolorous; costal veins and vein R. yellowish, the other veins 
brown, delicate; stigma light brown; antestigmal spot distinct, extends 
thru outer end of cell R. extreme point of Cell M, basal portion of 
cell 1st M2? into base of cell M? and slightly into base of cell Cu!; post- 
stigmal spot ill-defined; a whitish streak, not very distinct, in cell A’. 
Abdomen yellow, dark brown dorsal and lateral stripes (very 
variable in different specimens), lateral margin of tergites yellowish- 
gray; venter somewhat darker, especially posteriorly. Eight sternite 
subtruncate with a dense brush of coarse, brownish bristles, longer than 
the somite.  Hypopygium brownish-yellow; ninth tergite deeply 
grooved in the middle, apical margin deeply and narrowly incised in 
the middle, canthi prominent, acute, its points slightly depressed, lobes 
with a deep, rounded emargination, margin of the inflected portion pale 
yellow; subtergal process compressed, apex bent downward. Ninth 
sternite with deep, U-shaped emargination, at its lower end, the somite 
bulges outward in form of an oval appendage; from the upper part 
of the margin is suspended, a narrow, elongate-triangular, pointed, 
yellowish, membranous appendage.  Pleurites narrowly subtruncate, 
angles of the truncate cuspidate; evoluted part of the inner apical 
appendages conspicuous; lower apical appendages relatively short, 
broad basally, rounded at the tip, a small but deep sinuosity on the 
inner margin near the base, the inner face of the appendages is coarsely 
hairy. 
Holotype—&. Eureka, Utah, August 1, 1911 (T. Spalding). 
Paratypes—1 o. Eureka, Utah, June 30, 1911; 60°, 
Prova, Utah, June 24, 1912; 2 #0, Stockton, Utah, June 13; 
1913, (T. Spalding). 
The paratypes from Stockton have the abdomen distinctly 
darker and the lateral margin of the ninth tergite not paler. 
The lower appendages in some specimens are conspicuously 
curved outwardly and visible beyond the ninth sternite. A 
very distinct species. 
Tipula sinistra spec. n. 
Moderate size; general appearance yellowish. Cells C. and S. c. 
yellowish; Cu and its branches broadly seamed with light fuscous. 
The ninth tergite deeply and broadly emarginate, its canthi acute. 
Male.—Length, 15 mm.; wing 17 mm. 
Head yellow; rostrum darker, some luster; hairy vestiture sparse, 
long. Palpi yellowish-fuscous, darker outwardly. Front and vertex 
with a dense white bloom, fronta-occipital line impressed, fuscous. 
