CHERITRIN^. 201 



Genus CHERITRELLA. 



Cherltrella, de Niceville, Proc. Zool. Soc. 1887, p. 456; id. Butt, of India, iii. p. 403 (1890). 



Eyes naked. Forewing, vein 12 short, terminating on the costal margin before 

 the end of the cell, 11 emitted from middle of the cell, 10 from one-fourth before the 

 end, 9 from beyond the middle of 7 ; discocellulars upright and concave, the latter 

 slightly the longer, vein 6 emitted close to upper end of cell, 5 from above the middle 

 of discocellulars, 3 from a little before lower end, 2 from one-fourth before the end ; 

 sub-median vein straight ; costal margin slightly arched, outer margin somewhat 

 excavated below the apex to vein 4, where it is somewhat produced, nearly straight 

 and oblique from thence to the hinder angle, hinder margin straight. Hindwing with 

 vein 7 emitted some little distance before the upper end of the cell, nearly straight, 

 discocellulars of nearly equal length, concave, outwardly oblique, vein 3 emitted a 

 little before the lower end of the cell, 2 from beyond the middle, and running up the 

 long tail for more than half its length, sub-median vein nearly straight, internal vein 

 very short, highly sinuous, terminating on the abdominal margin above the deep 

 excavation ; costa strongly arched at the base, then nearly straight to the apex, which 

 is rounded, the outer margin slightly waved to the tail, continued nearly at a right 

 angle to the anal lobe, abdominal margin curving outwards at its base, with 

 a deep excavation above the anal lobe, a short tail at the end of the sub-median vein. 

 Antennae short, less than half the length of the costa of the forewing, slightly 

 thickening upwards to form the club ; palpi long, porrect, almost naked, much longer 

 in the female than in the male. 



Type, Cheritrella truncipennis, de Niceville. 



CHERITRELLA TRUNCIPENNIS. 



Plate 741, figs. 2, <J, 2a, 9,2b, $. 



Cheritrella truncipennis, de Niceville, Proc. Zool. Soc. 1887, p. 456, pi. 39, figs, i, $ ; 3, 5 ; id. Butt, 

 of India, iii. p. 404, pi. 28, fig. 223, <J (1890). Elwes, Proc. Zool. Soc. 1892, p. 639. Swinhoe, 

 Trans. Ent. Soc. 1893, p. 305. de Niceville, Journ. Bo. Nat. Hist. Soc. 1899, p. 334. 



Imago. — Male. Upperside. Forewing deep dull purple, the colour merging into 

 the black costal and outer marginal borders which are fairly broad, broader on the 

 outer margin than on the costa, and only to be distinguished in certain lights. 

 Hindwing black, with a large iridescent bright steel-blue patch on the upper part of 

 the wing from the base to near the outer margin, broadening outwards, its outer end 

 rounded ; anal lobe and the short tail ferruginous, the long tail blackish-brown, with a 

 white tip, an obscure round black spot on the margin between the tails, abdominal fold 

 pale. Cilia of both wings black. Underside pale pinkish-brown, markings dark brown. 



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