176 Mr. E. 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 can 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 w^ell 

 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 wdng 

 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 Peneloponince or 

 MegapodincBj 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. In 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, wh^ph 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 in 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 Edward Doubleday, Esq., Assistant in the 

 Zoological Department of the British Museum, F.L.S, &c. 



Fam. PAPILIONIDiE. 

 Genus Papilio. 

 P. Bromius. P. alls omnibus nigris, fascia communi lata puuctieque 

 marginali viridibus ; subtus fuscis, posticis fascia maculari pallide 

 aurea. Exp. alar. 3 unc. 9 lin. vel95 millim. 

 Hah. Ashanti. P. Bromius, Cat. of Lep. of Brit. Mus. 147. 



Wings above black, traversed by a bro^d bright green fascia di- 



