1914] Alexander—New or Little-known Neotropical Hexatomini 39 
brown, basally, darkening to brownish-black on the knob. Legs: coxe and tro- 
chanters dark brown; femora dull brownish-yellow, tip broadly dark brown, an 
indistinct broad darker median band; tibiz and tarsi brown, the former lighter 
colored basally. 
Wings: pale light yellow; a broad brown basal band filling in the space from 
slightly beyond cross-vein b to beyond the origin of R,; a second brown band filling 
in the space from the cord to the tip of Ri, down to the end of Cur. Venation (see 
fig. 8): Se rather short, ending opposite cross-vein r-m before the middle of R2+3; 
cross-vein r about equa! to that portion of R2 proximad of it; Rs long. 
Abdominal tergites reddish-brown, segments 6-7 rather darker, brown; segments 
8-9, reddish. Sternites reddish-brown. 
Holotype, Savannah, North Brazil. August 22, 1911. (Crampton.) Type 
in American Museum of Natural History. 
Eriocera longistyla Alex. 
1805. Tipula erythrocephala Vabricius; Syst. Anthar.; p. 31 (non T. erythro- 
cephala DeGeer. 1776). 
1821. Limnobia erythrocephala Wiedemann; Dipt. Exot.; vol. 1, p. 17. 
1828. Limnobia erythrocephala Wiedemann; Aussereur. zweifl. Ins.; vol. I, p. 30. 
1838. Cylindrotoma erythrocephala Macquart; Dipt. Fxot.; vol. I, pt. I., p. 67. 
1866. Eriocera erythrocephala Schiner; Verh. Zoél. bot. Ges. Wien.; vol. 16, p. 
929. 
1868. Eriocera erythrocephala Schiner; Novara Reise; Dipt.; p. 41. 
1869. Eriocera erythrocephala Osten Sacken; Monographs Dipt. N. Am.; vol. 4; 
p. 248. 
As I have shown elsewhere, the Tipula erythrocephala of Vabricius is homonymous 
with DeGeer’s species and I have renamed it as above. 
I have before me five specimens of this handsome little form, as follows: 
(1) &, Waratuk, Upper Potaro R.; July 15, 1911. (Crampton.) 
(2) o&, Upper Potaro R.; July 17, 1911. (Crampton.) 
(3) o&' @, Tukeit, Upper Potaro R.; July 24, 1911. (Lutz.) (in cop.) 
(5) @, Tukeit, Upper Potaro R.; July 24, 1911. (Lutz.) 
I am including a few additional details in regard to measurements and coloration: 
o, Length, 9.1-10.3 mm.; wing, 9.9-10.4 mm. 
2, Length, 10.8-11 mm.; wing, 10.3-10.9 mm. 
First and second antennal segments of the same bright orange color as the dorsum 
of the head; flagellum of antenne and the palpi dark brown. 
Mesonotal preescutum dark brown covered with a thick yellowish bloom which is 
less intense on the cephalic margin of the sclerite; three broad dorsal stripes, very 
indistinct. The thoracic dorsum, viewed with the naked eye, appears pearly- 
yellow; scutum and scutellum similar to the prescutum; postnotum darker brown, 
less pruinose. Wing shown in fig. 6. 
Abdominal tergites, segment 1 very dark brown, only the extreme margin orange; 
segment 2 light orange-yellow, with a dark brown postmedian band; segment 3 
orange, more yellowish on the anterior and posterior margins; segment 4, dark 
brownish-black, anterior quarter orange; segments 5-7 deep black, 8 and hypopy- 
gium orange. Sternites about as in the tergites; the lateral line dark on 2nd and 
