114 Mr. A. G. Butler on Heterocerous Lepidoptera 



or indeed of any species ever created ; but this is the case 

 with all the Noctuites represented on his plates. It 

 therefore becomes necessary to carefully compare the de- 

 scriptions with the specimens before finally deciding that 

 they are the insects intended by the artist. 



L. decolorata is a variety in which the primaries are 

 slightly paler than the type-form named by M. Guenee, 

 and the secondaries whiter, with the greyish diffused 

 outer border confined to apex or absent altogether, 

 " posticis albidis, apice cinereis " according to the author, 

 but the greyish border is only visible in certain lights ; 

 in others it changes to pale brassy golden. 



2. Leucania trifolii, n. s. 



Nearest to L. convecta of Walker (a species of the 

 L. extranea group) ; primaries above whity-brown, with 

 brassy reflections, more or less mottled with grey, and 

 irrorated with minute black scales ; discoidal spots 

 ochraceous, often placed upon a dusky discoidal greyish 

 nebula, the " orbicular " spot more or less fusiform, the 

 " reniform " either subquadrate or Q-shaped, and always 

 with a white dot upon a short longitudinal blackish dash 

 at its inferior margin ; an oblique abbreviated dusky 

 line from the apex, and below this a diffused brownish 

 external border, darkest next to the line ; fringe rather 

 dusky, reddish in dark examples ; the usual arched 

 discal series of black dots, double in dark examples ; 

 secondaries above greyish, sericeous, with the veins and 

 external border dusky ; fringe stramineous at base tra- 

 versed by a broad greyish stripe, and tipped with white ; 

 thorax sandy whitish, slightly tinted with grey ; antennas 

 grey, white towards the base above ; abdomen greyish 

 brown ; under surface of wings whitish, the primaries 

 with the whole central area shining grey ; costal border 

 sericeous, sparsely irrorated with blackish ; apex and 

 fringe pale pearly brown, slightly flesh-tinted ; internal 

 border silvery white, with faint brassy reflections ; 

 secondaries with the costal and external borders slightly 

 flesh-tinted and irrorated with grey and black ; a minute 

 linear black dot at the end of the cell ; body below pale 

 fleshy brown, very woolly ; anterior tarsi black. Expanse 

 of wings, 41 mm. 



Valparaiso, September to February ; at sugar. 



