DRUSILLA Horsfieldii.
Generic Character.
Antennæ mediocres, clavâ productâ, gracili, cylindraceâ. Palpi breves, compressissimi, obtusi, remoti, linguam non attingentes; lateribus utrisque hirsutissimis, articulos obtegentibus. Abdomen (in maribus) 7-articulatum: 1mo longissimo, ultimo simplici, truncato, suprà integro, subtus unco incurvato, valvis nullis. Alæ anticæ (in maribus) basi posticâ dilatatæ, fasciculum in alas posticas obtegentes.
(Obs. Alæ integerrimæ, subdiaphanæ, posticæ magnæ, orbiculares. Pedes antici spurii; antennarum articuli basales ad apicem incrassati.)
Typus Genericus Papilio Jairus. Fabr.
Antennæ 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. Abdomen (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 antennæ thickened at the end.)