402 DIPTERA. 
13. The fuscous coloration of the mings not radiated at the margins or 
at the tip . . . se ee . 
The fuscous coloration of the wings radiated at the margins or at 
least at the tip . . . oe 
14. Wings yellowish, with some rather large hyaline dots 
Wings fuscous, with many hyaline dots of different sizes 
15. Proboscis long and geniculated ; 
Proboscis of usual shape, with short terminal lips 2 . 
16. Radiation along the whole margin of the wings; scutellum swollen . 
Radiation only at the apical part of the wings; scutellum not 
swollen 
17. The fuscous coloration extended over the whole surface of the wings. — 
The fuscous coloration forming a large subapical spot, which emits 
several rays to the tip and to the margins 
HEXACHATA. 
Hexacheta, Low, Monogr. Dipt. N. Am. iii. p. 219 (1873). 
1. Small cross-vein beyond the middle of the discal cell . 
Small cross-vein on the middle of the discal cell 
14. 
16. 
Baryplegma, v. d. W. 
15. 
Ensina, Rob.-Desv. 
Tephritis, Latr. 
Carphotricha, Low. 
17. 
Euaresta, Low. 
Urellia, Rob.-Desv. 
2. The infuscate border of the posterior cross-vein connected with the other 
brown markings; in the apical portion of the wings a narrow brown 
stripe extending obliquely through the first and second posterior cells. 
eximia, Wiedem. 
The infuscate border of the posterior cross-vein separated from the other 
brown markings, and provonged upwards to a narrow, perpendicular 
cross-band . 
3. The brown coloration of the wings with some large and deep incisions, 
but without small hyaline dots . 
The brown coloration of the wings of a more irregular pattern and inter- 
rupted by some small hyaline dots . 
4, The brown coloration extended over the whole surface of the wings, with 
several, rather small, marginal incisions 
The brown coloration forming irregular cross-bands and spots . 
amabilis, Low. 
socialis, Wiedem. 
A, 
pulchella, v. d. W. 
5. 
5. The hyaline triangular costal spot beyond the stigma* reaching the 
second vein or with a small point beyond it . 
rupta, v. d. W. 
The hyaline triangular costal spot beyond the stigma much larger and 
reaching to near the fourth vein 
1. Hexacheta eximia, (Tab. XI. fig. 15, wing.) 
. splendida, Gigl.-Tos. 
Trypeta eximia, Wiedem. Aussereur. zweifl. Ins. i. p. 417'; Low, Monogr. Dipt. N. Amer. iii. 
p. 216. 1°. 
Tephritis fasciventris, Macq. Dipt. Exot., Suppl. 4, p. 291, t. 27. fig. 3°. 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).—Souta America, Surinam }, 
Brazil 2 3, 
* “‘ Stigma ” is the enlarged costal end of the mediastinal cell, usually dark-coloured. 
