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THE CASSIA BUTTERFLY. 
Papilio Cassia. 
PLATE XXXI. 
Papilio Cassin, Shaw's Nat. Mise. pl. 791. 
Tne upper surface of the wings is of a bright 
cinnamon brown, and considerably indented, with a 
broad, scalloped, sesquialterous,'bright golden-yellow 
band, traversing both the upper and lower wings. 
At the exterior margin, it is of a deep saffron, or 
golden-yellow, gradually softening into the prevail- 
ing tint. The body is of the same colour as the 
wings. On the upper wings, towards their tips, are 
two pale blue roundish spots. This Papilio mea- 
sures four inches and a halfin breadth. The cater- 
pillar is large, being three inches in length. It is of 
a pale willow-green above, with transverse broad 
bands. A longitudinal fillet of blue extends from 
the head to the tail, banded on each side by crimson ; 
beneath which is another longitudinal band of rich 
~ yellow, bounded on its lower extremity by a white 
band. The belly is deep olive green. The head is 
green, furnished with two ciliated appendages, like 
antenne:, and two hooked teeth-like processes. On 
the coronal surface, are three upright horns of green, 
tipped with crimson. The tail has two long horn-like 
