CATOi>SILlA. 225 



median nervule, as in Amynthia. The type, D. verhuelli, 

 Van der Hoeven, which inhabits North India and South China, 

 measures about 2^ inches across the wings, which are sulphur- 

 yellow above,. with the tip and hind-margin of the fore- wings 

 rather narrowly blackish ; a short ferruginous stripe on the 

 disco cellular nervules of the fore-wings, and a slightly oblique 

 yellowish line, most distinct below, running from the apical 

 blotch on the fore-wings to beyond the middle of the hind- 

 wings. 



GENUS CATOPSILIA. 



Catopsilia, Hiibner, Verz. bek. Schmett. p. 98 (1816) ; Butler, 

 Lepid. Exot. p. 154 (1873) ; Distant, Rhop. Malay, p. 295 

 (1885); Schatz, Exot. Schmett. ii. p. 67 (1886). 



Antennae moderately stout, longer than in Colias and its 

 allies, but shorter and thicker than in typical Pieris, &c. : 

 gradually thickened into a club, truncated at the tip. Wings 

 moderately long and broad, the fore-wings with the costa arched, 

 and the apex more or less distinctly rectangular, the hind- 

 margin slightly oblique ; hind-wings rounded. Sub-costal 

 nervure four-branched, the first branch emitted about the middle 

 of the cell, the second near the end of the cell, the third and 

 fourth forming a rather large fork ; the fourth running to the 

 hind-margin a little below the tip, the upper radial nervule 

 separating at about one-third of the distance beyond the cell. 

 Hind-wings with the pre-costal nervure obsolete. The males 

 have a tuft of silky hairs near the base of the inner-margin of 

 the fore-wings, and a patch of raised scales above the sub- 

 costal nervure of the hind-wings. 



The larvae are slender, cylindrical, and granulated. They aro 

 green or grey, with black spots, and feed on Cassia. The pupa 

 is moderately stout, pointed at both ends, but not curved, and 

 with a conical hump on the back. 



These Butterflies are confined to the tropics of the Old 

 10 Q 



