32 
LEPIDOPTERA. 
behind the head. The chrysalis is thick, curved and armed on the back of each of the 
three intermediate abdominal segments with a pair of conical points. 
Dr. Horsfield considers this insect as the type of the last of the three great sections 
of the genus Papilio having the antennas with obscure annuli, (vide synopt. table). 
Mr. Swainson gave it as a subgenus named Amphrisius, confounding the two species 
Heliacon and Amphrisius together, and applying the latter name as that of the genus. 
But as Priamus and its allies are the types of the same group, it would be absurd, even 
were it not inconvenient, to retain this genera name. I have therefore employed M. 
Boisduval’s name of Ornithoptera, altering its termination, however, to make it agree 
with the sex of the old genus Papilio, from which it has been separated. 
PAPILIO ID^EUS. 
Plate XIX. fig. 2. 
Species : Papilio Id.zeus : alis nigris, anticis fascia abbreviata flava, posticis dentatis, macula 
palmata trifida punctisque sanguineis, emarginaturis albidis. Expans. alar. unc. 4j. 
Papilio : with black wings, the anterior with an abbreviated yellow band, the poste- 
rior dentated, with a palmated mark composed of three red united spots, and 
several other red spots, the emarginations yellowish. Expanse of the wings 
4|- inches. 
Syn. Fabricius, Ent. Syst. III. 1. p. 16. Enc. Meth. 9. 33. Boisduval Hist. Nat. Lepid. 
p. 299. 
Habitat. Madras, Fabricius. 
This species was originally described from the collection of Mr. Drury, and Mr. 
Jones’s drawings, which evidently supplied Mr. Donovan with the present figure. The 
French Entomologists are only acquainted with the species through the works of 
Fabricius and Donovan. M. Boisduval is of opinion, that from the facies of this 
species it is rather an inhabitant of South America than the East Indies. 
PAPILIO ASTYANAX. 
Plate XX. fig. 1. 
Species. Papilio Astyanax: alis nigris concoloribus, anticis fascia sesquialtera alba striata, 
posticis dentatis, ecaudatis, macula discoidali palmata lunulisque sex submargina- 
libus sanguineis. Expans. alar. unc. 4. 
Papilio: with all the wings black, the anterior having a broad oblique whitish band, 
striped with black beyond the middle, united to another shorter, which crosses the 
