K!IOi>AUn-Ei:A MALA YAS'A. 



Genus SITHON. 



Sitfion, Hubner, Vera, bek, Schmett, p, 77 (1816); Moore, Proc, ZooL Soc. 1888, p, 526. 



Anterior wings subtriangular, the costal margin arched at base, the apex subacute, the outer margin 

 yery slightly convex, posterior margin slightly convex anil provided (in male) with a tuft of hairs near 

 base. Costal nervure sinuate, terminating on costa near end of cell, first subcostal nervnle impinging on 

 the costal nervure and emitted at about one-third before the end of cell, second emitted about midway 

 between bases of first and third, the last near end of cell, first and second median nervule S with an 

 apparently common origin near end of celh Posterior wings subovate, costal margin at about one-third 

 from base suddenly deflected and oblique to apex, posterior margin oblique, somewhat widened and lobular 

 at apex of second median nervnle, with a Blender tail-like appendage at apex of lower median nervule, 

 and a shorter and more lobate one at apex of submedian nervure, abdominal margin oblique, rounded and 

 not cleft at anal angle, subcostal nervules bifurcating at about one-third before end of cell. Palpi porrect, 

 second joint extending about half its length beyond the head, third slender, about or a little less than half 

 the length of second. Body long and moderately robust. Antenna moderately long, with a slender but 

 well- formed apieal club- 

 As known at present, this genus seems to be distributed in an area comprising Bengal, 

 the Malay Peninsula, Java and Sumatra* 



1- Sithon nedymond, var. (Tab. XXII,, fig, 1 . 

 Papain Nfdymtnd, Cramer, Pap. Ex. iv. t. 299, E T P {1782). 

 Thtcta N*dymond t Horef. Cat. Lep, E. I.C. p. 90, n, 28 {182ft). 



Sithon Ncdymtmd, Hiibn. Vera. bek. Schmett. p. 77 i 181G) ; Moore, Proe. ZooL Soc. 1888, p. 520. 



Male. Wings above dark fuscous or black ; anterior wings with a large discal dark bluish patch, not 

 extending to base nor above the subcostal nervure, and outwardly reaching to about one-third between 

 end of cell and margin ; posterior wings with the outer margin very broadly of the same hue ; tail-like 

 appendages dark fuscous, the outermost with ita apical third whitish, the innermost with a longitudinal 

 pale bluish streak. Wings beneath pearly-grey, the outer third of both wings chocolate-brown, of which 

 the innermost portion consists of a broad and somewhat straight darker brown fascia, the posterior wings 

 with a marginal greyish line ; at anal angle of posterior wings the brown ie replaced by oehraceous and 

 contains four bluish streaks margined with black, situate one between the second and third median 

 nervules, two between the third median nervule and submedian nervure, and the fourth oblique, between the 

 submedian and internal nervures : above tlu^e :md lu-hvt-on the third median nervule and internal nervure 

 is a transverse black streak inwardly containing some ochraceous markings : between the first and second 

 median nervules is an obscure dark spot containing a few pale bluish scales and outwardly margined with 

 ochraceous. Body above and beneath more or less concolorous with wings; legs pearly -grey, streaked 

 and aunulated with dark fuscous ; palpi pearly-grey, with their apices dark fuscouB. 



Exp, wings, $4 millim, 



Har.— 'Malay Peninsula; Sungei Ujong (colh Godfery).— Sumatra (Brit. Mus.),— Java (Horsf.L 



I have only seen one specimen of this species from the Malay Peninsula, which Mr. Godfery 

 writes me that he caught " ill a forest-path near the banks of the Linggi in Snngei Ujong/* 

 It is evidently an extremely rare species. I have no knowledge of the female, - and have 



* If it h not to be found in the following species ? 



February 20, 1885. 



