60 THE LEPIDOPTERA OF CEYLON. 



with three dorsal rows of branched pale spines and three lateral rows of shorter 

 spines. Feeds on Ahutilon, Ahelmoschus, &c. Pupa purple-brown, thick, abdominal 

 segments tubercular, head obtusely pointed, thorax convex. 



" Found at all altitudes. In the low country during September they are 

 particularly numerous ; this and the following month appears to be the chief time of 

 appearance " (Machvood). 



Genus ACIDALIA. 



Acidalia, Hiibner, Verz. bek. Schmett. p. 31 (1816). 

 Argynnis (part), Doubleday. 



Forewing triangular ; costa much arched, apex rounded, ■ exterior margin 

 oblique, sinuous, convex below the apex; costal vein extending two-thirds of the 

 margin ; first and second subcostal branches emitted before end of the cell, third at 

 nearly one-half beyond, fourth and fifth at two-thirds beyond ; upper discocellular 

 shortest, deeply concave, lower slightly concave, upper radial from end of the cell in 

 a line with the subcostal, lower from middle of discocellulars ; middle median branch 

 emitted at nearly one-third before end of the cell, lower from two-thirds before its 

 end ; submedian recurved : hindwing short, broad ; costal margin very convexly 

 angular at the base ; costal vein much arched from the base, the basal spur curved 

 outward ; first subcostal branch emitted at nearly one-half distance before end of the 

 cell ; discocellulars of equal length, upper curved very obliquely outward, lower 

 slightly curved ; two upper median branches from end of the cell, lower from one- 

 third before its end ; submedian and internal vein slightly recurved at the base. 

 Body robust; palpi ascending, finely pilose, second joint long, extending to top of 

 the head, third joint short, pointed and naked ; legs slender ; antennae with a short 

 spatular club. Sexes dissimilar. 



Type, A. Niphe. 



ACIDALIA NIPHE (Plate 31, Fig. 2 a, h). 



Papilio Niphe, Linnaaus, Syst. Nat. i. ii. p. 785 (1767); Diury, Illust. Exot. Ent. i. pi. 6, f. 1 ; 



Cramer, Pap. Exot. i. pi. 14, f. B— E. 

 Papilio Hyperhius, Jobanssen, Amoen. Acad. vi. p. 408 (1764). 

 Papilio Argyrius, Sparrman, Amoen. Acad. vii. p. 502 (1768). 

 Papilio Argynnis, Drury, Illust. Exot. Eut. i. pi. 6, f. 2 (1773). 

 Argynnis Tephnia, Godart, Enc. Meth. ix. p. 262 (1819). 



Male. Upper side bright dark ochreous ; forewing with black discoidal marks, a 



