130 INSECUTOR INSCITI^ MENSTRUUS 
caudad; ninth pleurite and sternite largely concealed by the 
prominent eighth sternite ; eighth sternite prominent, the dorsal 
surface with a flesh lobe on each side near the apex, densely 
white pubescent, bearing at the apex sharp, reddish spines. 
Holotype, male, Colorado. (From the collection of C. V. 
Riley.) 
Type, Cat. No. 19980, U. S. Nat. Mus. 
Tipula pleuracicula, new species. 
Male. — Length, 11.3 mm. ; wing, 13 mm. 
The type is teneral and the colors are not deep. Palpi light 
brown. Frontal prolongation of the head rather short, dull 
yellow, the extreme base with a slight gray bloom; the nasus 
prominent, upturned. Antennse dull yellow, the flagellar seg- 
ments probably darkened at the base in fully-colored speci- 
mens. Head light gray with a delicate interrupted median line. 
Thoracic dorsum dull yellow without distinct darker stripes. 
Pleura with a sparse grayish bloom. Halteres long, slender, 
light brown, the base more yellowish. Legs with the coxae and 
trochanters dull yellow; femora yellowish brown; tibiae and 
tarsi brown. Wings subhyaline ; costal region and the stigma 
darker ; veins brown. 
Abdomen brownish yellow, the segments narrowly ringed 
with silvery around the caudal margin. Ninth tergite of the 
hypopygium broad, conspicuous, the caudal margin subtrans- 
verse, the sublateral angles prominent, short, directed caudad 
and strongly ventrad, the apices truncated and sparsely 
toothed; ninth pleurite small, complete, produced caudad as a 
long needle-like point; eighth sternite prominent, the caudal 
margin almost straight across and with a broad fringe of 
coarse golden hairs. 
Holotype, male, Colorado. (From the collection of C. V. 
Riley.) 
Type, Cat. No. 19981, U. S. Nat. Mus. 
Tipula stalagmites, new species. 
Male. — Length, 14 mm.; wing, 15.5 mm. 
Palpi with the first segment dull yellow ; the second segment 
