1912} New Neotropical Tipuline 357 
Tipula atacama, sp. n. 
Small; yellow and brown; wings reddish-brown with hyaline spots; 
femora dark with a light subapical ring. 
2 Length, about 12 mm.; wing, 14.2 mm. 
Fore leg, femur, 6.8 mm.; tibia, 7.6 mm.; tarsus, about 12.5 mm. 
Head: Anterior prolongation of the front and palpi light yellowish- 
brown, the latter darker toward the tip. Antenne, segments 1—3, 
orange-yellow, remainder black. Front with a distinct protuberance 
just behind the antennz; front, vertex and occiput pale yellow. 
Thorax: Pronotum light yellow, a brown transverse mark in front; 
a semi-lunar brown spot on either side behind. Mesonotum, preescutum 
dark brown behind, a broad dark liver-brown median stripe of this 
color beginning near the cephalic margin of the sclerite, broadest in 
front, narrowing behind, reaching the suture; the caudal half of the 
sclerite is thinly grey pruinose; cephalic half, on either side and in 
front, of the median stripe, bright orange; scutum dark brown, thickly 
grey pollinose; scutellum and postnotum dull yellow, brown on the 
sides. Pleurz, brown, more yellowish ventrally; sternum yellow. 
Halteres yellow, knob slightly darker. Legs (fore only remain): coxz 
and trochanter yellow; femur, light yellowish-brown, a dark brownish- 
black ring at the tip with a light yellow subapical ring; tibia and tarsus 
brown. Wings: suffused with pale reddish-brown, adorned with hyaline 
spots arranged about as follows: (1) the clearest fill most of cell 1st Me 
and extends down into the base of cell Ms, the outer deflection of M3 
being whitened; (2) in cell 1R; above the fork of Rs; (3) In cell C above 
the tip of Sc. Less clear spots are in the center of cell R and, nearer the 
tip; a double spot near base of cells Rs and R;; one at base of M and cu; 
pale centers to cells M, Cu and Ist A. Venation as in Fig. d. 
Abdomen: Tergum, light yellow, segments 3—S slightly darker 
brown caudad; extreme ventral margin of tergites dark brownish- 
black. 8th tergite narrow, especially medially, due to the concave 
caudal margin. 9th tergite (see Fig. u) narrow, moderately long; base 
of the ovipositor cylindrical; the valves (u) broad at the base, rapidly 
narrowing to the slender, sub-spatulate tips. 9th sternite broad basally, 
conical, the valves (e) flattened, blade like, shorter than the upper 
valves. 
Holotype, @, San Antonio, Bolivia, (Received from Staud- 
inger-Bang-Haas). 
Type in author’s collection. 
The specific name is that of a native tribe of Indians dwell- 
ing west of the Andes and south of the region inhabited by 
the Aymaras. 
It may be allied to decorata Phil. and frauenfeldi Schin. 
(Chilian species) in the tuberculate front, but is little related 
in other respects. In wing-coloration, atacama shows some 
resemblance to flavipennis Phil. (Chile) but is only about half 
as large and shows conspicuous colorational differences. 
