1915.] NATURAL SCIENCES OF PHILADELPHIA. 509 
Tipula megaura Doanc. 
Tipnla megaura Doano; Jouniiil of the N(>w York Entomological Society, 
vol.9, No. 3, pp. 112, 113; 1!))1. 
Coloration pale browm.sh yellow, the thora(dc stripe.s reddish 
brown; antennal flagellum uniform in color or nearly so; male 
hypopygium with the ninth tergite tumid, produced into four sub- 
equal teeth; ninth pleurite produced into two subchitinized processes. 
Male. — Length, 12.7 mm.; wing, 14.6 mm. 
Frontal prolongation of the head moderately long, with abundant 
long black hair above; nasus not evident. Palpi light l)rown. 
Antenna? rather short, the segments uniformly light brownish yellow. 
Head pale brownish yellow, sparsely grayish pruinose with a broad 
median depression; head with numerous scattered black hairs. 
Thoracic dorsum pale brownish yellow with three light reddish 
brown stripes, the median one broad, split by a narrow vitta of the 
ground color; scutum with the lobes light brown; scutellum and 
postnotum yellowish. Pleura yellowish, thickly dusted with a 
bluish white pollen. Halteres pale, the knobs dark brown. Legs 
with the coxse pale yellow, bluish white pruinose; trochanters 
yellow; femora hght brown, rather broadly tipped with darker; 
tibiae and tarsi brown. Wings pale brownish yellow, the costal cell 
more saturated, yellowish; a vitreous antestigmal blotch, interrupted 
near the fork of the sector, most distinct along the cord and com- 
pletely filling the small cell 1st M.; veins dark brown (see Plate 
XVlf, fig. 22). 
Abdominal tergites brownish yellow, with the caudal margin 
narrowly, the lateral margin broadly bordered with silvery; a broad 
dorsal median stripe extending the length of the abdomen; sternites 
dull yellow, the caudal margins of the segments narrowly silvery. 
Male hypopygium (see Plate XVIII, fig. 42) with the ninth tergite 
(see Plate XIX, fig. 59) tumid as in most of this group of species, the 
posterior margin produced caudad and dorsad into a stout median 
lobe which bears two subequal, slightly divaricated lobules which 
are not blackened or chitinized; on the caudal face of the segment a 
tooth on either side of the median line, this directed caudad and 
slightly ventrad; the upper pair of teeth or lobules are smooth, but 
covered with a dense whitish pubescence; the lower pair which are 
a little more widely separated are covered with scattered setigerous 
tubercles; the ventral outer edge of the segment bears a broad, 
subchitinized (but not blackened except underneath) lobe on either 
side of the middle line, this lobe bifid, the proximal arm roughened, 
