40 LEPIDOFTERA IN DIG A. 



angle close to subcostal and the lower end ; cell open ; middle and lower median 

 veinlet very wide apart. Hindioing subquadrate ; costa much arched at the base, 

 apex convex, exterior margin scalloped and broadly angular in the middle and 

 at anal angle ; precostal vein thickened and bent outward at the middle ; cell 

 open. Body stont; palpi porrect, short, apical joint thick and obtusely pointed; 

 antennse with an elongated club ; eyes naked. Sexes dissimilar. Female 

 polymorphic. 



Type. — E. Halilherses. 



Polymorphism and Mimicry. — "Wherever the species of this genus are found the 

 females are very variable. In some species the females are distinctly polymorphic, 

 and are mimics of species of Buplgeine butterflies, occurring with' them, so closely, as 

 to be easily mistaken for them on the wing, the resemblance being not only in shape 

 and markings, but also in the manner of flights and in the habit of resting in 

 exposed positions. 



The males have quite a different appearance, their flight is rapid instead of 

 soaring, and they rest with closed instead of open wings, (de Mceville, Butt. Ind. 

 ii. 16.) 



EURIPTJS HALITHERSES (Plate 203, figs. 1, la, b, c, d, e, cj ? ; 204, fig. 1, a, b, c, ? ). 



Euripus Salitherses, Donhledaj awi Hewitson, Gen. D. Lep. pi. 41, fig. 2, cJ (1848). Westwood, 

 Gen.D.Lep. p. 293 (1850). Moore, Catal.Lep. Mus. E. I. Company, i. p. 199(1857). de Niceville, 

 Butt, of India, etc., ii p. 18, pi. 20, fig. 90, (J ? (188G) ; id. Journ. Asiatic Soc. Bengal (1887), 

 p. 51. Staudinger, Lep. Exot. pi. 48, S ? (1885). 



Diadema Nyctelius, Doubleday, Annals of Nat. Hist. (1845), p. 182, ? ; id. Gen. D. Lep. p. 281, pi 37, 



fig. !,?• 

 Ilestina Isa, Moore, Catal. Lep. Mus. E. I. Company, i. p. 161 (1857), ? . 

 Evripus Haliarius, Felder, Wien. Ent. Monats. 1860, p. 234, ? . 



Euri/us Cinnamomeuf, Wood-Mason, Journ. Asiatic Soc. Bengal, 1881, p. 272, pi. 4, fig. 4, ? . 

 Euripus Alcatlioeoides, de ITiceville, Butt, of India, etc., ii. p. 20 (1886), ? . 



Imago. — Male. Upperside blue-black, with pale yellowish-white markings. 

 Forewing with two pale yellowish-white short slender streaks within base of the cell, 

 a lobate spot at end of the cell, a transverse excurved discal series of spots, of which 

 the three upper are small and narrow, the fourth smaller and triangular, the next 

 situated between the middle and lower median veinlet being much larger and longi- 

 tudinally oval, beyond which is a submarginal series of six ill-formed <-shaped 

 marks ending below in a short streak on the posterior margin before the angle, 

 followed by a marginal posterior row of very bluish-white dots ; between the median 

 and submedian vein is a lengthened claviform streak, extending from the base, 

 and is sometimes continuous with a short streak splitting the lower <-shaped sub- 

 marginal mark, there also beiug sometimes present a slightly-defined slender line 



