31 4 THE PROCEEDINGS OF THE LTNNEAN SOCIETY 



HOMOKOSOMA Curt. 



Forehead with a blunt ridge of scales. Tongue strong. Ocelli 

 distinct. Antennae filiform, in ^ with a short notch above basal 

 joint. Labial palpi moderate, obliquely ascending, slender, some- 

 what compressed ; terminal joint rather more than half as long 

 as second, filiform, rather pointed. Maxillary palpi filiform, 

 appressed. Forewings long, moderately dilated, costa faintly 

 curved, more strongly before apex, hindmargin very oblique, 

 almost straight. Hindwings narrow, pointed, flatly rounded, 

 hardly indented. Forewings with 10 veins ; 8 absent, 4 and 5 

 stalked. Hindwings with 7 veins ; 3 and 4 unstalked from 

 posterior angle of cell. 



A small genus, occurring through Europe and Asia ; the larvae 

 feed in the flower-heads of Compositce. The two species described 

 are readily distinguished from each other by their size and 

 difl'erent markings. 



Horn, vayella Z., Is., 1848, 863. 

 7i" — 8". Head whitish, densely mixed with slaty-fuscous, 

 especially on forehead. Palpi arched, dark slaty-fuscous irrorated 

 with whitish. Antennae dark fuscous. Thorax dark slaty-fuscous, 

 irrorated with whitish. Abdomen ochreous-whitish, partially 

 suff'used with grey. Legs thinly ochreous-whitish-scaled above, 

 dark fuscous beneath. Forewmgs extremely narrow, hardl}'' 

 at all dilated, hindmargin very oblique, slightly rounded ; dark 

 fuscous, towards costa blackish, densely irrorated throughout 

 with slaty- whitish scales, coalescing to form a more or less 

 distinct white irregular subcostal streak from near base to about 

 two-thirds of disc, sometimes faintly streaked with brownish ; a 

 blackish circular spot near base in middle ; first line tolerably 

 strong, cloudy, blackish, from one-third of costa to a little beyond 

 one-third of inner margin, strongly angulated outwards above 

 middle, indistinctly margined basally with whitish ; second line 

 indistinct, blackish, not far from and nearly parallel to hind- 

 margin, broken and shortly acutely angulated inwards below 

 costa; at two-thirds of disc are two blackish obliquely placed 

 dots above middle, lower nearer to base ; cilia grey- whitish, with 



