336 LYCA:NID&. ARRHENOTHRIX, 
Genus 142.-ARRHENOTERIX, nov. (PLATE XXVIII). 
MALE. FoREWING, costa considerably arched, apex rather acute, outer margin slightly 
outwardly oblique from apex to termination of lower discoidal nervule, then straight to 
inner angle, #zer margin sinuous, produced into a bluntly rounded lobe near the middle, 
to which is attached on its extreme outer edge a tuft of long white hairs lying flat against 
the underside of the wing and turned upwards ; in addition to this there is another tuft 
of long white hairs attached to about the middle of the submedian interspace on the upperside 
of the wing, which is turned downwards, lying acrossa patch of dark scales differently 
formed to the other scales on the wing ; costal mervure terminating opposite to the apex of the 
discoidal cell, second subcostal nervule with its base equidistant from the bases of the first 
subcostal and upper discoidal, ¢kird subcostal arising a little nearer to the apex of the wing 
than to the apex of the cell ; middle disco-cellular nervule arising from the upper discoidal a 
little beyond its origin, ower disco-cellular upright, in the same straight line as the upper 
disco-cellular, about twice as long as that nervule ; second median nervule arising just before 
the lower end of the cell, frst median arising near to the second ; submedian nervure 
straight. HINDWING with two filamentous ¢az/s about ‘2 of an inch in length from the apices 
of the submedian nervure and first median nervule ; costa much arched, afex very rounded, 
outer margin neatly straight, posteriorly indented between the veins, a well-formed aval lobe, 
just above which the addominal margin is emarginate, then convex to base of wing ; a large 
rounded patch of dark differently-formed scales on the upperside of the wing in the costal 
interspace, which covers the base of the subcostal interspace and also extends somewhat 
into the discoidal cell ; costal neryure arched, not reaching the apex of the wing ; first subcostal 
nervule slightly arched, reaching the apex; wffer disco-celludar nervule straight, slightly 
outwardly oblique, Zower disco-cellular also straight, outwardly oblique, but even less so than 
the upper disco-cellular, a little longer than the upper; second median nervule arising 
immediately beforethe lower end ofthe cell; susmedian nervure straight ; internal nervure 
recurved. Antenne exactly half the length ‘of the costa of the forewing, with a long, gradu- 
ally-formed slender club. Ayes naked. /a/fi rather long, porrect, not rising above the level 
of the middle of the eyes, scaly. 
denuded silvery spot, corresponding with a delicate brush of lengthened hairs on the underside of the fore- 
wing ; the interior border is covered with a delicate whitish down, slightly fringed with gray. UNpeEr- 
sIpE, both wings grayish-brown with a very faint livid lustre ; a strongly pronounced broad snow-white 
band passes in a straight line through the middle of both wings to the anal region of the hindwing, 
where it becomes narrower, and after several minute curves, stretches obliquely to the interior margin ; 
between this and the hinder margin is a very delicate blackish thread composed of small linear 
fragments, in close contact, arranged in a regular curve across the forewing, slightly interrupted and curved 
in the hindwing, forming in the anal regiona delicate edge along the medial white band. Hindwing further 
marked within the posterior margin with a row of oblong spots of the ground-colour enclosed within a double 
series of white lunules, and continued in the anal region by two very large circular black ocellate spots, the 
exterior one being surmounted by a _ large oblong patch of a bright orange tint abruptly terminated at its con- 
tact with the black striga, the interior one occupying the anal appendage, being covered internally with a white 
arc sending off a short oblique line along the inner margin; the space between the ocelliis gray, irregularly 
irrorated with black and marked in the middle by an indistinct white lunule, a brilliant white thread passes 
along the entire anal region, exterior to which is a continued black marginal thread, and finally a grayish 
cilia. Body with a varying bluish or sea-green tint above, covered with a yellowish down underneath. 
Antenne brown, with a closely catenulated lateral white line extending to the origin of the club, the tip of 
which is ferruginous. Zaz/s black with a white tip and grayish cilia.” 
“‘ This species, as appears from a drawing in the possession of General Hardwicke, is also found on the 
continent of India. In Java it is comparatively rare, a single. male specimen was brought to Engiand.” 
(Horsfield, \. c-) 
“Male with the tuft of hair at the meeting of the wings white. FEMALE like the male, except that it is 
of a paler blue.’’ 
“Female variety. With the margins of the forewing broader and paler, a white spot at the end of the 
cell. Hindwing rufous-brown, the middle only blue.” (Hewitson. 1. c.) 
My knowledge of this species is confined to a single male from Western Java in my collection. Mr. Hewit- 
son records the species from Sylhet, but in all probability he failed to detect that the allied species Ll have 
described as Arrhenothrix penicilligera diff2rs in structure and markings from the true D. vidura, Horsfield. 
It is more than doubtful I think that the specimens Mr. Distant records from the Malay Peninsula belong to 
this genus rather than to the Arrhenothrix peniciiligera, mihi, as I possess a specimen from the Straits Settle- 
ments which has both the neuration and markings of the latter species, and not of Dacalana vidura, in 
favour of which supposition is the fact that in the specimen figured by Mr. Distant as D. vidura the white 
discal band on the underside of both wings is of the same widthas in A. fenicilligera. It would bea little 
remarkable if two such closely-allied genera should be found to occur side by side, 
