(7 
1912} New Western Tipula 
Tipula bifalcata n. sp. 
Yellow; head yellow, cinereous above with a median, darker line; 
palpi yellow, tips somewhat darker; first and second segments of an- 
tenne yellow, others brown; dorsum of thorax honey yellow, stripes 
very faintly indicated; rest of thorax yellowish, pruinose; halteres 
yellow, knobs brown; legs yellow, tips of femora, tibia and tarsi darker; 
abdomen yellow at the base, brownish posteriorly; eighth sternite 
produced, narrowed posteriorly; posterior margin with a shallow broad, 
rounded incision from the middle of which arises a tuft of short, thick, 
stiff, yellow hairs; lateral angles with a pair of conical processes, the tips 
of each of which are furnished with a pair of close-set, long, heavy, 
curved, reddish bristles and several shorter yellow hairs; ninth tergite 
with a deep median furrow, posterior margin ending in a pair of short, 
broad, blunt, black teeth, between which is a square incision; posterior 
lateral angles inflexed; ninth sternite with a deep shield-shaped incision 
from the sides of which arises a pair of rectangular plates which are 
imbedded in the membrane and to the tips of which are attached the 
two-parted base of the long, strongly curved, deeply furrowed, two- 
pointed guard; just below the end of the pleural suture, which is indi- 
cated only at the posterior margin, hangs a pair of flat, truncate append- 
ages, the lower edges of which are furnished with long, thick, reddish 
yellow hair; posterior margin of pleura with a very slight rounded 
incision; first pair of appendages long, slender, yellow, curved backward 
near their middle, tips with long yellow hairs; second pair broad, flat- 
tened, base narrower, anterior margin strongly chitinized, with a sharp 
triangular tooth at the tip and a long, narrow spine near the base of the 
appendage; inner faces with a series of fine chitinous ridges; third pair 
well separated from the second, spatulate with anterior angle drawn 
out into a broad, blunt point; arising from the same common base as 
the other appendages is a fourth pair of strongly chitinized appendages 
each consisting of a broad base and a long, regularly upward-curved, 
tapering hook; wings hyaline; costal and subcostal cell lightly tinged 
with yellow; stigma brown, indistinct; a faintly indicated whitish spot 
in front of the stigma. Length 18 mm., wing 19 mm. 
Habitat: san iis. Cal. l-male: 
Tipula biarmata n. sp. 
Like T. bifalcata with the following exceptions: third joint of antennz 
mostly yellow; dorsum of thorax lighter yellow; the posterior margin of 
the ninth tergite without the median square incision; the truncate 
appendages just below the end of the pleural suture are more tumid; 
third pair of pleural appendages elongate, narrow, of the same width 
throughout; fourth pair of appendages flatter, shorter, less strongly 
curved; a distinct whitish band beginning in front of the stigma and 
extending across the discal cell into the base of the fourth posterior cell. 
Length 18 mm., wing 19 mm. 
Habitat: Keyport, Wash. 1 male. 
