42 Annals Entomological Society of America [Vol. V, 
Tipula acutipleura n. sp. 
Light brown; head grayish brown, with a brown line above; rostrum 
yellowish with a brown stripe laterally; palpi brown; first and second 
segment of antennz yellow; third segment fusiform, yellowish, darker 
in the middle, remaining segments growing darker, those beyond the 
fifth wholly brown, each darker and somewhat incrassated at the base; 
collare lighter brown with three brown spots; mesonotum very light 
brown with four rather broad brown stripes; coxee, pleura, scutellum 
and metanotum hoary, the latter with three narrow stripes which are 
less hoary; halteres yellow, knobs brown; legs yellowish, tarsi and the 
tips of the femora and tibia brown; abdomen lhght brown with a rather 
broad brown line above; eighth sternite narrowed posteriorly, posterior 
margin with a shallow rounded incision from the sides of which arise 
tufts of rather long, stiff, curved, yellow hairs; ninth tergite small with 
a deep V-shaped incision and a narrow median depression; ninth sternite 
almost divided by a deep broad U-shaped incision in which hangs a 
pair of yellow tumid appendages; pleural suture almost completely 
setting off the somewhat triangular pleura which are produced poster- 
iorly into a rather long acute black-tipped process; upper pair of append- 
ages spatulate, tips with long black hairs, lower pair broad, flattened, 
yellow, distal margin black, more strongly chitinized and somewhat 
twisted; wings hyaline with a slight grayish tinge; an indistinct whitish 
band beginning in front of the stigma and extending into the base of 
the fourth and fifth posterior cells; another indistinct whitish spot in the 
middle of the first and the bases of the second and third posterior cells; 
stigma and a small spot over the tip of the auxilliary vein brown; discal 
cell more than three times as long as wide; Length 11 mm., wing 12 mm. 
Habitat> san Dieso, Cale eA male: 
Tipula atrisumma n. sp. 
Male: brownish yellow; head grayish brown with a darker brown 
line above; rostrum yellowish, somewhat grayish above; palpi wholly 
brown; first and second segments of antennee yellow, others wholly 
brown, those beyond the fourth slightly incrassate at the base; collare 
brownish with two yellow spots; mesonotum yellowish, with three 
broad brown stripes the median one divided by a faint gray line; coxee 
pleura and metanotum hoary; scutellum brownish yellow; halteres 
brownish, knobs darker; legs brownish yellow, tarsi and tips of femora 
and tibia darker; abdomen yellowish with a very broad brown line 
above, posterior margin of segments yellow; posterior margin of eighth 
sternite with a median pair of short yellow projections which are but 
little longer than wide; median one-third of ninth tergite yellow, rest . 
brown, with a broad deep incision and a median depression; just below 
the median portion of the groove is a pair of short, black, highly chitin- 
ized, triangular plates; ninth sternite with a deep very broad U-shaped 
incision from the lateral margins of which hangs a pair of short slightly 
tumid processes; pleural sutures complete; pleura produced into a 
