THE ENTOMOLOGIST. 



Vol. XXIV.] AUGUST, 1891. [No. 339. 



ORNITHOPTERA TROJANA, Staudinger. 

 Plate IV. 



In the ' Iris,' vol. ii. p. 4, will be found a very fully detailed 

 description of this lovely butterfly. The specimen from which 

 the accompanying plate has been drawn was recently received by 

 me. It came from Palawan (an island to the north of, and about 

 a hundred miles from, Borneo), and it will be seen that it does 

 not differ in any material degree from those received and so 

 excellently described by Dr. Staudinger. This eminent lepi- 

 dopterist has, however, so far as I can learn, not yet figured the 

 species, and the accompanying Plate will illustrate it for the 

 first time. 



"Of this grand new species, or local form of brookiana. 

 Dr. Platen unfortunately sent only five males, which were found 

 to differ very little. They are of the same size as the largest 

 brookiana, of which the anterior wing of the largest male out of 

 hundreds of specimens measured 3 in. 3 lin., whereas that of the 

 largest trojana measured fully 3 in. 7 lin. The green markings 

 of the trojana are not of so striking and brilliant gold-green as 

 those found always on the brookiana, but more of a blue-green ; 

 by one light they are quite a green-blue, whereas by another 

 more emerald than gold-green. The trojana has also on the 

 hind margin seven green patches, although they are shorter, 

 wider apart, and not so pointed on their outer end. These 

 patches (of which the last one is always quite separate from the 

 others) gives, on account of this, quite another impression to the 

 brookiana, where they appear to run more parallel with the costa, 

 being nothing like so far apart, whereas these diverge on the 

 trojana, and only run parallel with the hind margin. Although 

 the different patches (with the exception of the under one, which 

 is quite as pointed as those on the brookiana) are much blanter 



ENTOM. AUGUST, 1891. Q 



