On a new Species of Oniitlioptera. 193 



XXI. — Description of a neio Species of Ornithoptera, of the 

 Prianuis Growp, in the Collection of the Hon. L. Walter 

 Bothschihl By Robert H. F. Rippon. 



Ornithoptera eumceus, sp. n. 



(J. Wings silky green-blue (nearly peacock-blue), espe- 

 cially the primaries, in some lights a blue-green ; nar- 

 rowly bordered with black. Primaries on the upj^er surface 

 with a broad, costal, longitudinal, discal band of nearly 

 uniform width extending from the base to within a few 

 millimetres of the apex, slightly narrower at each extremity, 

 strongly divided from the base by the costal and subcostal 

 nervures, and again nearly midway by the subcostal nervurc 

 and its first branch nearest the costa; this band broadens 

 slightly and irregularly where it meets the first or upper 

 discocellular nervule ; the sexual transverse velvety patch 

 extends from the first median nervule to midway of the space 

 bounded by the median and subcostal nervures, is not sepa- 

 rated from the green-blue by black, and is of a rich dark 

 fuscous ; the median nervure nearly to the base strongly 

 accentuated by green-blue atoms, its three branches and the 

 third or lower discocellular nervule being also dusted in the 

 same manner, the atoms of the first median branch extending 

 into the coloured border ; all the remaining nervures and their 

 branches are indicated faintly by these atoms ; a green-blue 

 marginal band extends from the base of the posterior to four 

 fifths of the exterior margin, narrowest at the base and 

 towards the anterior angle, where it becomes divided by the 

 marginal folds into two or three elegantly curved patches, 

 decreasing in size towards the outer angle, following the 

 outline of the margin of the wing ; all the remainder of the 

 wing a deep velvety blue-black. 



Underside a rich black, becoming very ta\s'ny black 

 towards the exterior margin, the neuration standing Avell in 

 relief in either black or tawny black ; within the discoidal 

 cell an elongated patch of bluish green two thirds of its 

 width near the discocellular nervules and very narrow at the 

 base ; a slight irregular margin of the same colour also at 

 the upper part of the cell close upon the subcostal nervure; a 

 few atoms also are so arranged as to suggest that the ten- 

 dency was for the whole cell to be filled with green ; without 

 the cell the disk contains six green patches, widely separated 

 by the nervules, and two costal patches, bounded by the 

 third and fifth subcostal branches, the uppermost being the 



