chap, iv.] A FINE BUTTERFLY. 59 



triangular feather, and having very much the effect of a 

 row of the wing coverts of the Mexican trogon laid upon 

 black velvet. The only other marks are a broad ueck- 

 collar of vivid crimson, and a few delicate white touches on 

 the outer margins of the hind wings. This species, which 

 was then quite new and which I named after Sir James 

 Brooke, was very rare. It was seen occasionally flying 

 swiftly in the clearings, and now and then settling for an 

 instant at puddles and muddy places, so that I only suc- 

 ceeded in capturing two or three specimens. In some 

 other parts of the country I was assured it was abundant, 

 and a good many specimens have been sent to England ; 

 but as yet all have been males, and we are quite unable 

 to conjecture what the. female may be like, owing to the 

 extreme isolation of the species, and its want of close 

 affinity to any other known insect. 



One of the most curious and interesting reptiles which 

 I met with in Borneo was a large tree-frog, which was 

 brought me by one of the Chinese workmen. He assured 

 me that he had seen it come down, in a slanting direction, 

 from a high tree, as if it flew. On examining it, I found 

 the toes very long and fully webbed to their very extremity, 

 so that when expanded they offered a surface much larger 

 than the body. The fore legs were also bordered by a 

 membrane, and the body was capable of considerable 

 inflation. The back and limbs were of a very deep shining 



