350 Annals Entomological Society of America _ [Vol. V,- 
on either side of the median notch, produced ventrad into a small 
spine. The apical appendage is dorsal; the caudal margin is rather 
straight, the outer upper angle produced dorsad into a chitinized tooth 
which is slightly bifid at its apex, the chitin continuing down the 
anterior side of the appendage in a narrow line; the inner margin of the 
appendage straight, with scanty long hairs which cross over the median 
space and meet those of the other side. Between the chitinized teeth, 
on the median line, is a pale, horse-shoe shaped organ which probably 
surrounds the penis which is not exserted in my single specimen. 
Holotype, co, Chapada, Matto Grosso, Brazil (a. He: 
Smith, coll.) 
Type in Am. Mus. of Nat. Hist., New York. 
The specific name is derived from a native tribe. “The 
central parts of Matto Grosso at the foot of the plateaux are 
occupied by the Guatos, some of whom are still in the wild. 
state.’’ Reclus, Universal Geography, Vol. XIX, p. 258. The: 
latest and best account of this tribe is by Dr. Max Schmidt,, 
‘Reisen in Matto Grosso in Jahre 1910.’’”* 
Tipula smithi, sp. n. 
Light brownish-yellow; costal margin of wings brown. 
9 Length, about 18 mm.; wing, 12.8 mm. 
Head: Anterior prolongation of the front, short, light greyish-- 
brown; palpi light brown. Antenne, first eight segments clear light 
yellow, the apical segments gradually suffused with brownish. Front, 
vertex and occiput greyish-brown. Thorax: Mesonotum, praescutum 
light brown without apparent stripes; scutum similarly brown; scutel- 
lum and post-notum light yellow. Pleure yellow with a pearly-grey 
bloom. MHalteres light brown. Legs: coxe yellowish with a grey 
bloom; trochanter light yellow; rest of legs gone. Wings: Nearly 
hyaline; stigma rounded, dark brown; the costal margin suffused with 
brown, the brown pattern including cells C, Sc, the cephalic half of R 
(where it becomes paler, more yellowish); basal third of cell 1st Ri; all 
of cell 2d Ri; cell Re; cell Rs, except a hyaline spot in the proximal end 
and another over the middle of vein R4;;; brown clouds at origin and 
tip of cell R;; along basal deflection of Cu,; along cross-vein m; at fork 
of Mise, and at the ends of the longitudinal veins. Venation: (see Fig. 
f); cross-vein r about as long as that portion of Re below it; Rs short, 
about twice as long as Re; basal deflection of Ri;; long, almost oblit- 
erating cross-vein r-m; petiole of cell M, almost as long as that cell; 
fusion of M; and Cu; extensive, not quite as long as cross-vein m. 
Abdomen: Tergites brownish-yellow; sternites clearer yellow; sec- 
ond segment very long, as long as 3 and 4 combined; 9th tergite with 
caudal margins concave (see Figs. w, wi), the caudo-lateral angles 
*Zeitschrift fur ethnologie; vol. 44, pt. 1; p. 1380-174; especially, p. 131-137; 
(1912). 
