ORNITHOPTERA. 263 



the chopped food, its attraction for the Butterflies was ac- 

 counted for. I again visited Gopeng five years ago, but the 

 beautiful Butterfly was no longer to be seen in the valley, 

 which had been entirely altered in character by the extension 

 of the works of the miners. 



" The only other place in which I met with the insect in 

 Perak was at another mining centre called * Chandariang,' in the 

 Betang Padang district, about ten miles from Gopeng. There 

 were a good many specimens flying, like those at Gopeng, about 

 ten feet or less from the surface of the ground in the neigh- 

 bourhood of a pool of water; all the specimens observed in 

 both places were males, with one exception. The female was 

 resting on the flowers of a beautiful Taxonia, on the edge of the 

 jungle, about fifteen feet from the ground. 



"Mr. Leonard Wray, who is the curator of the excellent 

 Museum of the State of Perak, and a most zealous and scien- 

 tific naturalist, lately sent me two specimens from Perak, but 

 did not mention the district in which they had been collected. 

 Mr. Kiinsller was in charge of the Singapore Museum when 

 I took the specimens from Perak to it, and he subsequently 

 visited the State and revelled in collecting and sending home 

 large quantities of insects for sale, and he was also a very 

 successful botanical collector for Dr. King, the director of the 

 Royal Botanical Gardens at Calcutta." 



GENUS ORNITHOPTERA. 



Ornithoptera, Boisduval, Voy. Astrolabe, Lepid. p. 33 (1832) ; 

 id. Spec. Gen. Lepid. i. p. 173 (1836) ; Doubleday, Gen. 

 Diurn. Lepid. p. 3 (1846); Schatz, Exot. Schmett. ii. p. 

 40 (1886). 



Fore-wings long, sub-triangular, the apex rather pointed ; 

 hind-wings rounded and dentated. Fore-wings with the third 

 branch of the sub-costal nervure generally rising at the cell. 



