HELCYRA. APATURA. 229 



interspaces 1, 3 and 4. Hind wing with the postdiscal series of 

 spots of the upperside represented by the three subtornal spots, 

 the upper one of these crowned with yellow and a somewhat 

 diffuse spot in interspace 6 ; on the inner side of these spots a 

 very slender, highly sinuous, transverse lunular line crosses the 

 disc of the wing. Antennae pale brown ringed with white, club 

 black tipped with ochraceous ; thorax bluish ; abdomen white ; 

 beneath, the palpi, thorax and abdomen white. 



Exp. S 2 G5-75 mm. (2-55-2-9S"). 



Bab. Sikhiin ; the hills of Assam and Upper Banna. 



Genus APATURA.* 



Apatura, Fabr. Illig. Mar;. 1807, p. 280; Leach, Edinb. Encycl. 



1815, p. 718; de N. Butt. Ind. ii, 1886, p. 48. 

 Eulaceura, Butler, P. Z. 8. 1871, p. 726 ; de N. Butt. Ind, ii, 1886, 



p. 55 ; Moore, Lep. Ind. in, 1896-99, p. 20. 

 Eohana, Moore, Lep. Ceyl. i, 1880, p. 27 ; id. Lep. Ind. iii, 1896-99, 



p. 16. 

 Potamis, Mimathyma, Chitoria, Dravera, Narsenga, Moore. Lep. Tnd, 



iii, 1896-99, pp. 3, 8, 10, 14 & 15. 



Type, A. iris, Linn., from Europe. 



Range. Both hemispheres. 



6 2 . Fore wing: costa slightly arched; apex rounded, somewhat 

 produced; termen concave in the middle ; toruus broadly rounded, 

 dorsum straight ; cell open, upper and middle discocellulars only 

 being present and very short ; vein 8 out of 7 in apical third of 

 wing, 9 out of 7 from about middle of wing, 10 and 11 free, 12 

 terminating well beyond origin of 9. Hind wing ovate ; costa 

 slightly arched ; apex blunt, truncate ; termen scalloped, nearly 

 straight; tornus well-marked, dorsum arched; cell open, veins 5, 6 

 and 7 approximate at base. Antennas long, well over half length 

 of fore wing; club well-marked, rounded or quadrate, not flattened ; 

 palpi thick, short, porrect, third joint pointed at apex ; eyes naked, 

 hairy in a few forms ; thorax robust ; intermediate and posterior 

 femora fringed with long hair posteriorly, tibiae shorter than femora, 

 scaled. 



Key to the forms of Apatura. 



6 tf. 

 A. Eyes naked. 



a. Upperside of wings brilliantly glossed with 

 iridescent blue. 

 a'. Ground-colour black. 



a 2 . Cell of fore wing on upperside uniform, 



without a streak A. ambica, p. 2£0. 



b 2 . Cell of fore wing- on upperside with a 



broad white streak A. chevana, p. 232. 



b'. Ground-colour ochraceous yellow A. here, p 231. 



* Dr. Moore, following Scudder, gives priority to Potamis, Hiibner (' Ten- 

 tamen,' 1806). Hiibner's ' Tentamen ' is a list of genera with the types indicated 

 but no diagnoses ; I have preferred therefore to follow Distant and de Niceville 

 in retaining Fabrieius' widely known nams for the genus of which A. iris is 

 the type. 



