PAPILIONIN^. 165 



BYASA LATREILLEI (Plate 430, fig. 1, la b, ^J, Ic, ? ). 



Papilio Latreillii, Donovan, Kit. Eep. iv. pi. 140 (1S26). Staudiiiger, Exot. Schmett. i. p. 9 (1834). 



Elwes, Trans. Ent. Soc. Lend. 1888, p. 425. Eothschild, Xov. Zool. ii. p. 261 (1895). 

 Papilio Mimreus, Gray, Zool. Misc. p. 32 (1831); id. Lep. Ins. Nepal, p. 5, pi. 1, ? (1846). 



Doubleday and Hewitson, Gen. D. Lep. i. p. 9 (1846). Westwood, Cab. Orient. Ent. p. 81, pi. 



40, fig. 1 ? (1848). Moore, Catal. Lep. Mus. E. L Company, i. p. 97 (1857). Felder, Verb. 



Z. B. Ges. Wien. 1864, p. 325. 

 Papilio (Byasa) Latreillii, de Xict-ville, Sikkim Gazetteer, 1S94, p. 171 ; id. Journ. As. Soc. Bengal, 



1897, p. 566. 



Imago. — Male. Ujjperside. Foreicing greyish fuliginons-black, with a l^hick 

 longitudinal streak between the veins, and others within the cell. Cilia black. 

 Hindrving greyish fuliginous-black basally, deep black in the posterior interspaces ; 

 with a pinkish-white lower-discal patch composed, of three portions placed in the 

 interspaces between the lower median and the radial, the outer portions each 

 excavated posteriorly, the inner one more ti'uncated ; beyond is an upper sub- 

 marginal sullied-white or pale crimson-white small spot which is either oval or 

 lunular, below this are the ordinary-placed lower submarginal lunules, a smaller spot 

 at anal angle of lower median, and a tail spot, which are all small and either of a 

 dull pale crimson or bright crimson ; abdominal marginal lappet when unfolded 

 displaying a longitudinal androconial patch of white dense woolly hairs. Underside 

 much paler ; greyish-fuliginous. Hindwing with the three lower discal patches and 

 outer submarginal markings as on the upperside ; the lower lunules and tail spot 

 being brighter coloured ; a slender continuous lower discal white streak edged with 

 crimson is also present in the submedian interspace, and sometimes an upper white- 

 speckled contiguous dot in the lower subcostal interspace, and also a submarginal 

 small white lunule in the angle of the upper subcostal interspace. ThoriLc and 

 abdomen above fuliginous black ; front of thorax above and sides beneath, collar and 

 front of head, and abdomen beneath crimson ; abdomen beneath with black lateral 

 spots and segmental cross-bands ; anal valves crimson ; antennte and legs black. 



Female. "\Yings broader. Upperside paler than in the male. Hindwing with 

 the three portions of the lower-discal white patch somewhat larger, and with an inner 

 narrow portion extending from the lower median to the marginal anal angle, this 

 portion being sometimes crimson edged posteriorly, and also an upper small white 

 or speckled-white spot in the lower subcostal interspace ; the submarginal lunules 

 and tail spot somewhat larger. Underside paler than the upper. Hindwing with 

 markings as on the upperside, and also with a small white spot within the angle of 

 the upper subcostal interspace, the submarginal lunules and tail spot brighter 

 crimson. 



Expanse, 6 ? , 4 to ■i^ inches. 



