Peckham—Revision of the Attidce of North America. 369 
Prof. Win. M. Wheeler frequently found americana mimic¬ 
ing the ant Componotus planatus Roger, and running in files 
with the ants up and down the trees at Miami, Florida, in May. 
From Georgia, Florida, Texas, Arizona, Vera Cruz, Mexico 
and Missouri. 
PECKHAMIA PICATA H. 1845. 
Plate LI, figures 2—2c. 
1845. Synemosyna picata H., Jour. Bost. Soc. Nat. Hist., V. 
1875. Synemosyna picata H., Occ. Pap. Bost. Soc. Nat. Hist., II, p. 75. 
1888. Synageles picata P., Wis. Acad. Sciences, Arts and Letters VII, 
N. A. Att., p. 94. 
1891. Synageles picata E., Trans Conn. Acad. V, p. 32. 
1892. Synageles picata P., Occ. Pap. Nat. Hist. Soc. Wis. II, 1 p, 64. 
Length, $ 3.4 mm., $ 4.8 mm. Legs, S 4123, $ 4231, first 
pair stoutest, especially patella and tibia. Spines in both sexes, 
tib. I 3-3; met. I 2-2, tib. II 3-3, met. II 2-2. The cephalic 
part is limited by a depression, beyond which the thoracic part is 
raised into a ridge and then falls steeply; it is prolonged below, 
to meet the pedicle. The abdomen is constricted near the an¬ 
terior end, more strongly in the male than in the female. 
Color. Eye-region, dark with violet reflections; thoracic part, 
reddish-brown with two white spots in the depression between 
the dorsal eyes. Anterior segment of abdomen reddish-brown; 
posterior segment glistening black, with two white bands which 
begin at the constriction and curve downward over the sides. 
Venter dark. 
The first legs of the female are twice as thick as the others 
and the first legs of the male are still stouter. The patella 
and tibia are flattened in front, especially in the male. This 
surface in the male is purple and iridescent. Legs $ , femur, 
brown; patella and tibia, dark; metatarsus and tarsus, yellow or 
light brown; second pair, femur, brown, patella and tibia light; 
metatarsus and tarsus dark. In some specimens there is a black 
longitudinal line on the anterior face of patella and tibia. Third 
pair, femur as in second, other joints light with sometimes the 
