PIERINJE. 125 



CATOPSILIA CHRYSEIS (Plate 48, Fig. 3, 3a, ^ ? ). 



Papilio Chryseis, Drury, lUustr. Exot. Ent. i. pi. 12, fig. 3, 4 (1770), g. 

 Gallidryas Chryseis, Butler, Lep. Exotica, i. p. 5, pi. 3, fig. 4 — 7. 

 Papilio Alcyone, Cramer, Pap. Exot. i. pi. 58, f. A— C (1775), ^ ?. 



Male. Upper side pale greenish-white : forewing with a broad apical marginal 

 black band with acutely sinuous inner border ; a very slender small black-speckled 

 streak at end of the cell. Female with a broader and angular inner-bordered apical 

 marginal band, the costal margin also blackish ; a large oval black spot at end of the 

 cell : hindwing with a broad blackish macular marginal band. Underside pale buff- 

 yellow, crossed by pale ochreous strigae. Female with a slight indistinct reddish pale- 

 centred spot at end of cell on forewing and three contiguous spots on hindwing. 



Expanse, S 2|-, ? 2f inches. 



Genus IXIAS. 



Ixias, Hiibner, Verz. bek. Schmett. p. 95 (1816). 

 Thestias, Bolsduval, Spec. Gen. des Lep. i. p. 590 (1836). 



Wings ample, broad : forewing short, subtriangular ; exterior margin slightly 

 uneven ; costal vein extending to two-thirds the margin ; first subcostal at one-third, 

 second at one-eighth before end of the cell, third trifid, fifth from beyond end of the 

 cell, fourth at nearly one-half from below third ; cell very broad, extending to half 

 the wing ; discocellulars outwardly oblique, both concave, upper shortest, radial from 

 their angle; middle median at one-sixth, lower at one-third before end of the cell; 

 submedian very recurved : hindwing obconical, short, exterior margin uneven, 

 oblique, slightly angular before the lower end ; precostal vein slender ; costal curved 

 towards the end ; first subcostal at one-fourth before end of the cell, much curved ; 

 discocellulars very oblique, upper shortest, lower recurved, radial from their angle ; 

 cell broad ; middle median at one-sixth, lower at one-third before end of the cell ; 

 submedian slightly curved, internal recurved. Body stout, thorax and head hairy ; 

 palpi projecting slightly beyond the head, hairy beneath, third joint short; legs 

 slender ; antennse terminating in a gradually compressed club. 



IXIAS PIRENASSA (Plate 50, Fig. 1, la, (^ ?). 

 Thestias Pirenassa, Wallace, Trans. Ent. Soc. 1867, p. 395, pi. 9, f. 4, (J. 

 Male. Upperside sulphur-yellow : forewing with the anterior half obliquely black 

 and traversed by an orange-red scallope-bordered subapical band crossed by black 

 veins : hindwing with a narrow black marginal band attenuating to the posterior 

 angle. Female sulphur- yellow ; the orange-red band on forewing narrower and 

 interrupted below the radial and upper median vein, the t^wo lower portions being 



