286 NATURAL HISTORY. 
cording to the shape of the wing. One of these families, 
styled by Linneus Knights or Chevaliers, generally have 
a long, swallow-like tail at the extremity of the hind 
wings, as seen in the Troilus, Fig. 220. This Butterfly 
Fig. 220.—The Troilus. 
has black wings spotted with yellow. Its caterpillar is 
green, with a yellow stripe on each side, and a row of 
blue dots, while the under side of its body and its feet 
are reddish. In this country it is more frequently seen 
in the Southern than in the Northern States. The But- 
terfly called Berenice, Fig. 221, belongs to the family 
of Round-winged Butterflies. It was named after the 
wife of Antiochus, King of Syria, said to be the loveliest 
woman of herage. It is quite common with us. It has 
dark-red wings with black veins, and a black border with 
two rows of white dots. The caterpillar is of a light vi- 
olet color, with brown, red, and yellow lines. 
488. The second section of the Lepidoptera, the Moths, 
