PEIOXER1S. 151 



578. Prioneris thestylis (PL XVII, fig. 113;, Doubleday (Pieris), 

 in Grai/s Zool. Misc. 1842, p. 76 ; Doubleday, Westw. Sf Heicits. 

 (Pieris) Gen. Di. Lep. i, 1847, p. 44, pi. 6, fig. 2 rf; Wallace, 

 Trans. Ent. Sac. 1867, p. 384 ; JBlwes, Trans. Ent. Soc. 1888, 

 p. 410. 



Pieris seta, Moore, Cat. Lep. Mus. E. 1. C. i, 1857, p. 78. 



Prioneris watsoni, Hetcitson, Trans. Ent. Soc. 1868, p. 99; 

 Moore, P. Z. S. 1878, p. 839. 



Wet-season form. c? . Upperside : white. 1'ore wing : veins 

 black, the white ground-colour between the veins darkened on the 

 basal area by the markings of the underside that show through ; 

 costa and apical third or more of the wing black, this colour extended 

 into the cell at its apex and gradually decreasing in width to the 

 tornus ; on the apical third the black is not uniform, but variegated 

 with markings of the white ground-colour as follows : a series 

 of streaks in interspaces 3 to 7 and 9, broadly interrupted in inter- 

 spaces 3, 4, and 5 and form a discal and a subterminal series, 

 continuous in interspaces 6, 7. and 9, and pointed at apex ; in inter- 

 spaces 1 , l,and 2 the white ground-colour extends almost to the 

 terminal margin, but is limited at their apices by the broadening 

 of the black at the apices of the veins, sometimes in interspaces 1 

 and 2 the white is also indistinctly interrupted by a diffuse trans- 

 verse scaling of black. Hind wing : veins black on the outer two- 

 thirds, with broad black terminations at their apices, these are so 

 connected as to form a black terminal edging to the wing ; within 

 this the ground-colour is darkened bv the markings of the underside 

 that show through. Underside fore wing : black, variegated with 

 the following white and yellow markings : interspaces 1 , 1, and 

 2 whites limited by the black at the apices of the veins and occa- 

 sionally subterminally by an indistinct diffuse transverse black 

 bar as on the upperside ; cell with ill-defined, often largely inter- 

 rupted white streaks in the lower half and two oval white spots 

 before the apex in the upper half ; an anterior discal series of five 

 spots, the posterior three white, the anterior two bright chrome- 

 yellow ; the subcostal spot elongated into a streak is followed by a 

 transverse subterminal series of spots, the anterior three or four 

 bright chrome-yellow, the posterior two or three white, the upper 

 two elongate. Hind wing : black, with the following bright chrome - 

 yellow markings: interspaces 1 a and 1 with broad streaks, limited 

 at base and more narrowly at apex ; a broad, somewhat irregular 

 streak margined with white in cell, a strongly-curved discal series 

 of large spots margined with white and decreasing in size anteriorly 

 in interspaces 1 to 7, followed by a subterminal series of much 

 smaller spots in interspaces 2 to 7, the upper two or three elongate ; 

 finally an oval spot interior to the discal spot in interspace 7 and a 

 large spot on the precostal area conspicuously traversed by the 

 black precostal spur or vein. Antennae black ; head and thorax 

 clothed with long bluish-grey pile ; abdomen blackish ; beneath : 

 the palpi, head and thorax black, abdomen white. 



