( 2G1 ) 



XVIII. Descriptions of Uco new Lepidoptera of the 

 family Spliingidffi. By Arthur G. Butler, 

 F.L.'S., F.Z.S., &c. 



[Read October 1st, 1879.] 



The following new species have recently been added to 

 the collection of the British Museum: — 



Angonyx horneensis, n. sp. 



Allied to A. assamensis, slightly larger, the primaries 

 above silvery-grey, clouded on inner margin and disc 

 Avith snow-white, a Avhite line running obliquely from the 

 centre of the disc to near the apex, Avhere it joins a black 

 line running to the apex ; two large black spots separated 

 only by the upper discocellular veinlet at the end of the 

 cell ; a dentate-sinuate slender brown line across the disc 

 and partially defining the limits of the discal white nebula, 

 a corresponding parallel but abbreviated line at external 

 angle, the lowest sinuation being black ; secondaries 

 purplish-brown with darker outer border sparsely sprinkled 

 with grey scales ; abdominal area testaceous, limited in- 

 ternally by a black longitudinal streak ; body silvery grey, 

 the sides of head, thorax and the tegulte dark olivaceous, 

 edged externally with snow-white ; under surface ruddy- 

 greyish with cold grey outer borders to the wings ; 

 primaries Avith the outer border dark, deeply dentated 

 internally, its lower half bounded by cream-coloured 

 sagittate spots ; basal three-fifths of inner border cream- 

 coloured ; upper half of outer border bounded internally 

 by an oblique dull red streak ; an oblique blackish spot 

 across the costal border near apex, a blackish streak on 

 discocellulars ; secondaries with pale abdominal area ; 

 a subanal marginal brown spot, bounded internally by 

 a cream-coloured spot ; base of palpi and front of anterior 

 coxfe Avhite, hinder edges of posterior segments of venter 

 rose-red, spotted Avith projecting Avhite scales at the sides ; 

 anus AA'hite : expanse of wings 2 inches 2 lines. 



Hah. — Borneo. 



TRANS. ENT. SOC. 1879. — PART IV. (dEC.) 



