492 PROCEEDINGS OF THE ACADEMY OF [Sept., 
6 cT 9 , Scott's and Difficult Runs, Fairfax Co., Va., July 25, 1915 
(McAtee and Alexander). 
The specific name is that of the Delaware name for the Iroquois. 
The type, allotjq^e and paratypes Nos. 4, 5, 9, 10, 15 and 16 are in 
the collection of the author; paratype No. 1 in the collection of Mr. 
Johnson; paratypes Nos. 2 and 3 in the Museum of Comparative 
Zoology; the remaining paratypes in the United States Biological 
Survej^ collection. 
There is a possibility that this may be Tipula cincticornis Doane, 
but the description of the latter implies that the outer lol^es of the 
ninth tergite are acute as in Tipula suhmaculala Loew. Under 
these circumstances, the present insect must be considered to be 
distinct. 
^ Tipula monticola sp. n. 
Coloration yellowish; antennae bicolorous; head light gray; 
thoracic stripes quite indistinct, brownish orange; wings hyaline, 
the costal region yellowish; male genitalia with the ninth tergite 
large, the caudal margin deeply U-shaped, bearing a small lobe 
underneath, the lateral lobes of the tergite broad, the tip a slender, 
chitinized point; inner pleural appendage with the caudal arm 
pointed, the inner arm blade-like, draped on its outer face with a 
delicate ribbed membrane; eighth sternite with two great tufts of 
long silvery hairs. 
Male. — Length, 17-18 mm.; wing, 18-19 mm. 
Frontal prolongation of the head long, rather slender, dull yellow, 
a little gray above; palpi brown. Antenna:^ rather short, the three 
basal segments yellow, the remainder of the organ with the swollen 
bases of the segments dark brown, the stem yellow on the basal 
segments, soon passing into dark browTi so that the terminal segments 
are unicolorous. Head light gray, a narrow blackish median vitta 
extending backward from the small frontal tubercle, becoming 
indistinct before the occiput. 
Thoracic dorsum light graj'ish yellow, the j^rsescutum with three 
brownish orange stripes, the median one broadest in front, more 
narrowed behind, split by a delicate brown median line on the 
anterior half; scutum light yellow with the disk of each lobe darker; 
scutellum light yellow with numerous, long, pale yellow hairs; 
postnotum pale yellow. Pleura pale yellow, whitish pollinose. 
Halteres light yellow, the knobs brown. Legs with the coxse whitish 
poUinoSe; trochanters yellow; femora dull yellow, brown at the 
apex; tibiae yellowish brown; tarsi light brown. Wings hyaline or 
