176 Mr. B. Doubleday on some new Diurnal Lepidoptera. 
but the very strong hooked bill and remarkable teeth displayed 
in the mandible are at variance with the most powerfully-billed 
pigeons, and we cau form at present no opinion as to the pro- 
bable use or adaptation of the latter structure. The position and 
linear form of the nostril agree with that of Megapodius as well 
as the bare space in front of the eye, and the indication of the 
want of feathers on the sides of the throat. The form of the wing 
approaches to that of Penelope. The tail of fourteen feathers is 
square and comparatively short, while the colouring of the plu- 
mage reminds us of some of the ground doves. The tarsi are 
short, and are naked very shortly above the tarsal joint ; the out- 
ward covering has been destroyed, but in front appears to have 
consisted of rounded scales. The feet are of moderate size, and 
the outer and inner toes, quite unconnected at the base, are of 
equal length. 
From a careful consideration of the general characters, we are 
inclined then to place this singular bird with the Peneloponine or 
Megapodine, probably the latter. We are aware of no existing 
description, though there is one allusion made to a bird which 
may eventually turn out to be this. Im Mr. Strickland’s Report 
on the Recent Progress and Present State of Ornithology, read 
before the British Association at York, it is stated, “The recent 
American voyage of discovery will extend our knowledge of Poly- 
nesian zoology, and its researches will be made known by Mr. 
Titian Peale, who is said to have discovered among other rarities 
a new bird allied to the dodo, which he proposes to name Diduncu- 
lus ;’ and we believe “ strigirostris” has been applied specifically. 
In that part of these voyages already published there is no zoology 
given, so that we cannot now ascertain the value of this discovery, 
and from the specimen before us possessing no characters im com- 
mon with a struthious bird, we have ventured to characterize it 
as a new generic form. 
July 30, 1845. 
XIX. — Descriptions of new or imperfectly described Diurnal 
Lepidoptera. By Epwarp Dovus.epay, Esq., Assistant in the 
Zoological Department of the British Museum, F.L.S. &e. 
Fam. PAPILIONID. 
Genus PapiLio. 
P. Bromius. P. alis omnibus nigris, fascia cominuni lata punctisque 
marginali viridibus ; subtus fuscis, posticis fascia maculari pallide 
aurea. Exp. alar. 3 unc. 9 lin. vel 95 millim. 
Hab. Ashanti. P. Bromius, Cat. of Lep. of Brit. Mus. 147. 
Wings above black, traversed by a broad bright green fascia di- 
