DRUSILLA Horsfeildii. 



Generic Chakacter. 



Antenna mediocres, clavu productd, gracili, cylindraced. Palpi breves, com' 

 pressissimi, obtusi, remoti, linguum non attingentes ; luteribus utrisque 

 hirmtissiinis, articuUs obtegentibus. Abdomen (in maribus) 7-articula- 

 tum : Imo longissimo, ultimo simplici, truncato, supra integro, subtus unco 

 incurvato, valvis nullis. Ala anticm (in maribus) basi posticd dilatuttp, 

 fasciculmn in alas posticus obtegentes. 



(Obs. Ala integerrima, subdiaphana^^ostica 7nagn<E, orbiculares. Pedes an- 

 tici spur a ; antennarum articuli basales ad apicetn incrassati.) 

 Typus Genericus Papilio Jairus. Fabr. 



Antennae moderate, the club lengthened, slender, cylindric. Palpi short, 

 much compressed, obtuse, remote, not touching the tongue, covered 

 equally on both sides with thickset hairs concealing the joints. Ab- 

 domen (in the male) 7-jointed, the first very long, the last simple, 

 truncate, and entire above, without valves, and with an incurved 

 hook beneath. Anterior wings (in the male) dilated at the posterior 

 base, concealing a tuft of hair on the inferior wings. 

 Generic Type Papilio Jairus. Fabr. 



(Obs. Wings very entire, sub-diaphanous. Hinder wings large, orbicular. 

 Fore-legs spurious. Basal articulations of the antennae thickened at 

 the end.) 



Specific Character. 



i). alis anticis angustatis, fuscis, concoloribus ; margine posteriore et exteriore 

 (Equalibus : posticis albidis ; margine exteriore fusco, supra uni-ocelluto, 

 subtus bi-ocelluto. 



Wings, anterior, narrowed, the posterior and exterior margins equal, uni- 

 form brown ; posterior cream-coloured, with a brown margin, one 

 ocellate spot above, and two beneath. 



This new and elegant insect was discovered by my worthy 

 friend Dr. Horsfeild (after whom I have named it) in the inte- 

 rior of Java : it forms a part of the extensive collections made 

 there by this zealous naturalist for the East India Company, and 

 PI. 11. 



