1921] Dietz: .Impudica Group of Tipula f 
sordid yellow. Legs slender, yellowish, pilosity very short, brownish; 
femora slightly, tibiae not, infuscate at the apex, the latter distinctly 
longer than the metatarsi; tarsi infuscate. Wings pale-gray, Cell S. c. 
and base yellowish, Cell C. concolorous. Stigma pale fuscous. Veins 
C., S. c. and R. yellowish, other veins brown, not seamed with fuscous; 
the antestigmal spot inconspicuous, ill-defined, extends interruptedly 
thru base of cell Ist M?, into base of cell M*; post-stigmal spot distinct. 
Abdomen yellow with light brown dorsal vitta, extending uninter- 
ruptedly from tergite one to the base of tergite six; a lateral, con- 
spicuous dash on tergites one to eight; lateral margin pale, grayish- 
yellow. Venter somewhat darker along the median line, more so 
caudally. The eight sternite broadly truncate with a brush of mod- 
erately long bristles; central bristles decussating. Hypopygium (PI. I, 
Fig. 3) yellowish brown; the ninth tergite produced ‘mesially and 
slightly emarginate apically, broadly and deeply grooved, lateral lobes 
with deep, rounded emargination; the subtergal process acute, almost 
entirely concealed by the large, evoluted portion of the inner apical 
appendage. The ninth sternite with a broad, U-shaped emargination, 
the margin pale yellow with a narrow, pale, membranous appendage. 
Pleurites subtruncate, angles of the truncature acuminate; the inner 
apical appendages conspicuous, bent dorsad apically, the evoluted por- 
tion large, leaf-like, almost completely concealing the subtergal process; 
the lower apical appendages broad, convoluted, yellow-haired within, 
with a patch of dark brown hairs; caudal portion subdorsad, apex 
obtusely rounded. Penis guard large, conspicuous. 
Holotype— @. Prova, Utah, June 24, 1912 (T. Spalding). 
Paratype—l- 1c". 
The formation of the ninth tergite distinguishes this species 
from the other members of the group. 
Tipula spaldingi spec. n. 
Moderately large; general coloration eallowieee The ninth tergite 
deeply incised and narrowly and deeply channeled its whole length; 
canthi produced, acute. The lower apical appendages obtusely rounded 
at the apex: 
Male.—Length 17 mm.; wing, 16 mm. 
Head: Rostrum cio some lustre; frontal prolongation sparsely 
hairy. Palpi brownish-yellow, darker outwardly. | Antenne rather 
slender and somewhat elongate; scapal and first flagellar joints, pale 
yellow, following joints subcylindrical, light brown, outer joints dark, 
pubescens white. Face, front and occiput yellowish with a white bloom, 
a dark fronto-occipital line. 
Thorax yellowish-gray, mesonotum more livid. Pronotal scutel 
yellowish above. Prascutal lines light brown, narrow and nearly 
straight, hairs of the interspaces very fine and short; markings of 
scutum ill-defined, a smaller, rounded, antero-exterior spot and an 
elongate blotch along the median line; scutel and postnotum grayish- 
