1915.] NATURAL SCIENCES OF PHILADELPHIA. 505 
Ninth tergite tumid; eighth stcrnito shorter, not closely applied 
to the ninth sternite for the entire length of the latter, the 
tip without chitinized points 2 
2. Ninth tergite with four lobes or horns megauru Doane.^ 
Ninth tergite with two or no horns 3 
3. No horns on the tergite johnsoniana sp. n. 
With horns on the tergite 4 
4. The horns on the tergite directed upward hicornis Forbes.^" 
The horns on the tergite directed caudad or slightly ventrad, 
morriaoni sp. n. 
The Pakrarctic Tipula fascipennis Meigen (1818) was the first 
described species of this group and should probably give the name 
to the group. The Nearctic groups of the genus should be correlated 
with the Palsearctic species. 
V Tipula johnsoniana sp. n. 
Coloration light yellow, the thoracic stripes grayish brown; 
antennal flagellum uniformly brown; male hypopygium with the 
ninth tergite tumid without processes; ninth pleurite produced 
into a broad flattened process. 
Male. — Length, 17.5 mm.; wing, 19 mm. 
Frontal prolongation of the head rather short, with numerous 
short black hairs on the dorsal and lateral surfaces; nasus indis- 
tinct. Palpi light brown. Antenna rather long, much longer than 
in the related hicornis Forbes; the flagellar segments are slightly 
swollen basally; the scapal segments and the basal half to two-thirds 
of the third segment dull yellow, the remainder of the appendage 
dark brown. Head rich brownish j^ellow with abundant short 
black hairs scattered over the dorsal surface. 
Pronotal scutum yellowish brown with an inchstinct bro^\mish 
spot on the side of the sclerite. Mesonotal prsescutum light yellow 
with three grayish browu stripes, of which the median one is broadest 
and longest; the interspaces between the stripes are provided with 
numerous long yellowish hairs; scutum, scutellum and postnotum 
dull brownish yellow. Pleura pale yellow, thickly whitish pollinose; 
trochanters dull yellow; femora yellow. Avith the apex narrowly dark 
brown; tibiae brown, the apex obscurely darker; tarsi brown. Wings 
with a slight grayish tinge, more yellowish in the costal region and 
in cell M adjoining vein Cu; stigma dark brown; a conspicuous 
^megaura Doane ; Journal of the New York Entomological Society, vol. 9, No. 
3, pp. 112, 11.3 ; 1901. 
'^"'hicornis Forbes ; Sixteenth Report State Entomologist of Illinois, p. 78, Plate 
6, fig. 4; 1891. 
