434 SUPPLEMENT. 
The Central-American species now known to me may be distinguished in the 
following manner :— 
1. Abdomen black (in 7. nitidiventris the anus is rufous) . . . + 2. 
Abdomen yellow or rufous, sometimes brown or black towards 
the apex . . 4, 
2. The black coloration of the. wings reaching the end of the apical 
and discal cells . . . . lanipes, Fabr. 
The black coloration of the wings not reaching to ‘the end of ‘the 
apical and discal cells. . . - . . 8. 
3. Anus rufous ; fringes of the hind tibiee black with yellow tips . . nitidiventris, v. d. Wulp. 
Anus not rufous ; fringes of the hind tibia wholly black. . . . alipes, v.d. Wulp. 
4, Scutellum yellow or rufous, usually blackish at the base. . . . 5. 
Scutellum black . . . . 2 ee ew ee 6 
5. A yellow spot in the blackish portion of the wings. . . . . «+ pennipes, Fabr. 
No yellow spot in the wings . . . Loe . oe ee . 6Sguamipes, v. d. Wulp. 
6. Thorax before the transverse suture with four black bands . . . nigripes, v.d. Wulp. 
Thorax before the transverse suture with three black bands (seen 
from behind). . ... . 7. 
7. The black coloration of the wings ‘extending beyond the apical and 
posterior cross-veins . . . Lo oo pyrrhogaster, Wiedem. 
The black coloration of the wings not it extending beyond the apical 
and posterior cross-veins. . . . . . . + . © « + « « pilipes, Fabr. 
Trichopoda pennipes (p. 3). 
Ocyptera ciliata, Fabr. Syst. Antl. p. 315°. . 
Trichopoda ciliata, Wiedem. Aussereur. zweifl. Ins. ii. p. 273°; Macq. Dipt. Exot. ii. 3, p. 77, 
t. 9. fig. 1°. 
To the localities given, add :—Mexico, Orizaba (coll. Bellardt), N. Yucatan 
(Gaumer). 
Brauer and von Bergenstamm (Denkschr. Akad. Wiss. Wien, lvi. p. 147) and Tyler 
Townsend (Proc. Ent. Soc. Wash. il. p. 187) regard 7. ciliata and T. pennipes (Fabr.) 
as the female and male respectively of the same species, and I think this will prove to 
be the case. 
The last-mentioned author informs me that J. pennipes has been bred in North 
America from a Hemipteron, Anasa tristis. | 
Trichopoda pyrrhogaster (p. 3). 
To the localities given, add :—Mexico, Atoyac (H. H. Smith). 
3. Trichopoda lanipes. 
Thereva lanipes, Fabr. Syst. Antl. p. 220°. 
Trichopoda lanipes, Wiedem. Aussereur. zweifl. Ins. ii. p. 270°; Rob.-Desv. Essai sur les Myodaires, 
p. 284°; Walk. List Dipt. Brit. Mus. iv. p. 696‘; Towns. Proc. Ent. Soc. Wash. ii. p. 138”. 
