250 LLOYDS NATURAL HISTORY. 



This Sub-family, as above restricted, corresponds exactly 

 to the genus Papilio^ as understood by Felder. 



Three genera are now recognised by most Continental and 

 English writers, but the real number is much larger. 



GENUS DRURYA. 



Drurya, Aurivillius, Entomol. Tidskrift, ii. p. 44 (1881); 

 Schatz, Exot. Schmett. ii. p. 40 (1886); Rippon, Icones 

 Ornith. p. iv.* (1892). 



Club of the antennae gradually formed; collar well developed; 

 fore-wings very long, the hind-margin gradually concave ; sub- 

 costal nervure five-branched, the third rising just before the cell; 

 hind-wings short, rounded, slightly dentated, the inner-margin 

 straight, not concave or folded ; abdomen extending beyond 

 the hind-wings. 



The type of this genus is the famous Papilio antimachus, 

 Drury, a specimen of which was brought to Europe by Smeath- 

 man from Sierra Leone, and figured by Drury in 1782, and sub- 

 sequently by Donovan in his " Naturalist's Repository." This 

 specimen is now in the Sydney Museum, and no other was 

 brought to Europe till 1864, though it is now known to occur, 

 though always sparingly, over a large portion of Tropical West 

 Africa, even as far inland as Stanley Falls on the Congo. The 

 wings are very long and narrow (less so in the female, which is 

 smaller than the male), expanding from seven to nine inches. 

 The fore-wings are black, with large tawny spots and markings 

 towards the base, and the hind-wings are tawny, with a row of 

 black sub-marginal spots. It has been supposed to mimic 

 some unknown, and probably extinct species of the Sub-family 

 Acraina. Its nearest ally is a West African Butterfly, which 

 has been described as Papilio ridleyanus, White, and which 

 both in size, shape, and colour, much resembles Gnesia zete* 



(Linn.).* 



* /. vol. i. p. 38. 



