498 PROCEEDINGS OF THE ACADEMY OF [Sept.^ 
Tipula rangiferina sp. n. 
Coloration yellowish brown; antennal flagellum unicolorous ; 
thorax without distinct stripes; lateral margin of the abdominal 
tergites with five brown spots; male genitalia with the ninth tergite 
broadly concave behind, the lateral angles produced into prominent 
blunt horns which suggest the budding horns of a stag. 
Male. — Length, 13 mm.; wing, 13.5 mm. 
Female. — Length, 16 mm.; wing, 14.7 mm. 
Frontal prolongation of the head moderate in length, light brown^ 
the nasus prominent; palpi light brown. Antennae with the three 
basal segments dull brownish yellow, the remainder of the flagellum 
almost black, each segment with a basal swelling, the segments 
with a whitish pubescence. Head dark gray. 
Pronotum and the dorsum of the mesonotum light brown, without 
distinct darker markings. Pleura pale brownish yellow. Halteres 
long, rather slender, the stem pale, the knob brown. Legs with the 
coxse yellovidsh; the trochanters browTiish yellow; femora yellowish 
brown, the tip dark brown; tibiae brownish yellow, the tip narrowly 
dark brown; tarsi brown. Wings light grayish; stigma distinct, 
light brown; a broad vitreous band before the stigma extending 
into cell Mt] a very small vitreous spot beyond the stigma in the 
base of cell R2; veins brown. Venation as in Plate XVII, fig. 17. 
Abdominal tergites brownish yellow, a little darker dorsally, 
each segment with the caudal margin silvery; tergite two with a 
large rounded spot on the side at about midlength; tergites three 
to six with this spot basal, conspicuous; apical tergites brownish, 
the hypopygium more reddish; sternites dull brownish yellow; the 
sclerites are provided with numerous scattered black hairs. Male 
genitalia (see Plate XVIII, fig. 38) with the eighth tergite broad, 
distinct for its entire width. Ninth tergite (see Plate XIX, fig. 55) 
extensive, the caudal margin deeply and broadly concave; the 
lateral angles produced into a blunt lol^e whose tip is provided with 
four or five blunt tubercles which suggest the budding horns of a 
stag; the dorso-median area is broadly membranaceous. Ninth 
pleurite complete, but very small and restricted, consisting of a 
small oval lobe on the caudal face of the sternite; this sclerite is 
produced caudad into a flattened oblong point which bears on the 
inner face near the tip a sharp, triangular, chitinized tooth, directed 
inward and caudad; the outer face of this pleural projection is 
provided with from fifteen to eighteen coarse hairs; the pleural 
appendage (see Plate XX, fig. 70) is a conspicuous lobe, the anterior 
