07 
ANTHOMYZA TIRESIA. 
PLATE IV. Fig. 2. 
Pap. Tiresia, Cramer , Pap. Exot ., pi. 85, f. B. — Anthomyza 
Tiresia, Swainson's Zool. Illus., pi. 124. 
This subgeneric group may be distinguished from 
the other Anthrocerida?, or moth-like day-flying 
Sphingidie, by having the antenna; slightly pecti- 
nated in one sex only ; palpi pointing vertically ; 
anterior wings with the outer or exterior margin 
much shorter than the posterior ; hind wings length- 
ened horizontally, but short and rounded. This 
definition, according to Mr. Swainson, includes all 
the large and imposing species of this tribe found in 
Tropical America ; and by comparing their charac- 
ters with those of the oriental group last described, 
it will be seen how strikingly they differ. Thu 
author just named states that he paid great atten- 
tion to these insects, during his researches in Brazil, 
which is the chief metropolis of the group. They 
fly slowly and heavily during the middle of the day, 
and on the least touch counterfeit death. Most of 
the species, when handled, discharge from their 
body a brown linuor, like their prototypes the Heli- 
a 
