176 LLOYD'S NATURAL HISTORY. 



disco-cellular nervule present on the fore-wings, the second 

 discoidal nervule rising from the end of the cell ; hind-wings 

 rounded. 



This genus is confined to Australia and the Indo-Australian 

 Region generally, and includes a few silky-white species, more 

 or less bordered with black (often only at the tips of the fore- 

 wings), and measuring about an inch and a half across the 

 wings. The type is E. egnatia (Godart), from Australia and 

 the Moluccas. 



GENUS LEPTOSIA. 



Leptosia^ Hiibner, Verz. bek. Schmett. p. 95 (1816); Distant, 



Rhop. Malay, p. 287 (1885). 

 Pontia, Boisduval (nee Fabricius), Spec. Gen. Lepid. i. p. 430 



(1836); Doubleday, Gen. Diurn. Lepid. p. 40 (1847); 



Schatz, Exot. Schmett. ii. p. 65 (1886). 

 Nychitona, Butler, Cist. Ent. i. pp. 34, 41 (1870). 



Antennae long, with a compressed spindle-shaped club; 

 palpi very short ; wings rounded at the tips ; sub-costal ner- 

 vure three-branched, with two branches emitted before the 

 end of the cell, the second discoidal nervule rising from or 

 close to the end of the cell. 



A small but very well-marked genus, confined to the tropics 

 of the Old World. The species measure about an inch and 

 a half across the wings, which are white, with the tip of the 

 fore-wings black, and generally a round black spot on the disc, 

 opposite the middle of the inner-margin. The under surface 

 of the hind-wings is more or less mottled with green. The 

 insects have a very weak flight, and resemble Leplidia sinapis in 

 their habits. They have a superficial likeness to the latter species, 

 except for the broader wings, and as in the Wood White, too, 

 spotless forms of the species of Leptosia are sometimes met 



