101) RHOPALOCERA MALAYANA. 



nearly straigbt. First ami second subcostal nervules emitted close together near end of cell, the second 

 much longer than the first ; third emitted some distance before the apex of the second and extending to 

 ai)ex, Itefore which it is prominently curved and rounded ; fourth and fifth bifurcating at about one-fourth 

 from apex : upper disco-cellular nervule short and angled ; lower disco-cellular absent, leaving the apex of 

 the cell entirely open : first median nervule strongly curved near base, where it has an apparently common 

 origin with the second. Posterior wings subovate, the costal margin nearly straight, the outer margin 

 convex and slightly waved; abdominal margins well separated, slightly convex towards base and then 

 obliquely divergent to anal angles. Costal norvure sinuated and curved upwards near base, and then 

 continued to apex. Discoidal cell open ; discoidal nervule emitted a short distance from base of second 

 subcostal nervule ; first median nervule curved and rounded near base, where it has a common origin with 

 the second : both first and second are considerably shorter than the third. Body short, the thorax robust ; 

 antennm long, slender, the club compressed. 



This genus is a Malay representative of the large and widely-spread genus Apatura* to 

 which it is somewhat closely allied. But one species is at present known, and its geographical 

 range appears hmited. 



1. Eulacura osteria. (Tab. XTI., fig. 5 <y , and 65.) 



Apatura Osteria, Westwood, Gou. Diuru. Lep. p. 305, u. 19, vote (1850). 



Eulaceiira Osteria, Butl. Proc. Zool. Soc. 1871, p. 726; Druce, ibid. 1873, p. 846, n. 1. 



F.ulacara osteria, Butl. Trans. Linn. Soc. ser. 2, Zool. vol. i. p. 511, n. 1 (1877). 



Male. Wings above dark glossy fuscous. Anterior wings with a discal oblique series of five white 

 spots, the uppermost and smallest situate above the first median nervule, remaining four larger, contiguous 

 and only separated by the median nervules and submedian nervure. Posterior wings with a corresponding 

 but broader oblique series of subquadrate spots, which form a continuous fascia, although apparently 

 divided by the nervules and terminating about centre of abdominal margin, the basal two-thirds of which 

 is pale greyish ; a submarginal row of obscure rounded fuscous spots placed between the nervules, and two 

 narrow fuscous marginal lines. Wings beneath pale silvery bluish, both wings crossed by the pale discal 

 ol)lique series of spots, f(n-ming a more continuous fascia than above, and silvery white inwardly margined 

 with ochraceous ; two narrow ochraceous f ascise crossing cell of anterior wing ; outer margins of both wings 

 and apex of anterior wings bordered and suffused with ochraceous, and two ocellated spots (ochraceous with 

 bluish and black centres), the first on anterior wing situate between the second and third median nervules, 

 the second spot situate between the second and third median nervules of the posterior wings. Body and 

 legs more or less concolorous with wings. 



Female. Pale brownish. Anterior wings with two dark fascife crossing cell and with a very broad pale 

 submarginal fascia, the outer margin of which is denoted by a series of lunulate white spots, and the inner 

 margin — which is directed outwardly from subcostal nervure to first median nervule and then obliquely 

 reflexed — is marked by a scries of irregular white spots ; and an indistinct ocellated spot between the second 

 and third median nervules. Posterior wings with a narrow pale oblique macular fascia (continuous to the 

 inner margin of the broad fascia of anterior wings) obscurely terminating about middle of submedian 

 nervure ; an ocellated spot between second and third median nervules, and a waved and strongly lunulated 

 ochraceous submarginal fascia, inwardly enclosing obconical fuscous spots, excepting between the second 

 and third median nervules and from thence to anal angle ; two fuscous marginal lines and basal area of 



" ■''y tlis name Apatwra I allude to the genus as hitherto almost miiversally understood, and not as recently 

 applied by Messrs. Scndder and Moore to species of HijpoUmnas. Where an earlier generic name is clearly found to have 

 priority the law should unhesitatingly he applied; but where a certain amount of doubt exists, and the "evidence is not 

 convincing, the name generally used should remain unchanged. 



