48 Annals Entomological Society of America Wol=ae 
somewhat tumid, protruding processes the posterior lateral margins 
of which are sharply incised; ninth sternite large, lower posterior angles 
with somewhat curved, downward-projecting spatulate appendages, 
these are attached by the lateral margin and bear numerous short, 
reddish brown hairs near the tip; pleural sutures well-developed com- 
pletely setting off the sharp-pointed triangular pleura, first pair of 
pleural appendages small, spatulate, second pair with a narrow stalk 
bearing a large, thin, irregular, rectangular plate; third pair somewhat 
spatulate, very much larger than the first pair, with rather long reddish 
hair at the tip; eighth sternite of female rather strongly chitinized, 
posterior lateral angles produced into short rounded lobes a little longer 
than wide; two short, broad, two-pointed strongly chitinized appendages 
arise from the posterior lateral angles of the broad truncate median lobe; 
ninth tergite very small almost concealed beneath the eighth; tenth 
tergite also very short, more strongly chitinized, cerci very short, broad, 
rounded; wings hyaline with a very slight smoky tinge, costal and 
subcostal cells yellowish; stigma brown, an interrupted whitish band 
running from in front of the stigma through the discal cell into the base 
of the fourth posterior cell, another whitish spot behind the stigma, a 
small indistinct brownish spot at the origin of the prefurca. Length 
male 13 mm., female 12 mm., wing 12 mm. 
Habitat: Stanford University. Many males, 6 females. 
Larve feeding on grain roots in meadows. 
Tipula pacifica n. sp. 
Brown; head grayish brown with dorso-median and _ post-ocular 
broad, brown lines; rostrum grayish brown, sides darker; first and last 
segments of palpi dark brown, others lighter brown; first and second 
segments of antennz yellowish brown others brownish, darker at the 
base; antennz of female more yellowish; thoracic dorsum with very 
broad, brown stripes which are distinctly bordered by darker brown lines; 
median stripe divided by a fusiform brown line; lateral margins clouded 
with brown; dorso-pleural membrane whitish; pleura grayish brown 
with indistinct brown spots; an irregular brownish line just below the 
dorso-pleural suture; scutellum almost wholly brown; metanotum 
grayish with three broad, brown stripes; halteres brownish, knobs 
darker, tips whitish; legs brownish, tarsi and tips of femora and tibia 
darker; abdomen brown, darker brown laterally; extreme margins 
whitish, seventh, eighth and ninth segments almost wholly dark brown; 
posterior margin of eighth sternite yellowish, not produced posteriorly; 
posterior margin of ninth tergite yellowish, under surface with two 
black, triangular, downward-projecting processes; posterior margin of 
ninth sternite with a broad, deep rectangular incision; pleural suture 
indistinct, lateral margins with a pair of very large whitish irregular- 
shaped appendages some of the inner and upper folds of which are 
furnished with thick, short, black hairs or bristles; upper appendages 
rather broad, lateral margins somewhat rolled, tip rounded; ovipositor 
of female reddish brown, upper valves rather long, acute; lower valves 
