TRIFIDJL. 57 



and Southern Europe, being found at Gibraltar througliout 

 the year ; also in South Sweden, Northern Africa, and Asia 

 Minor. 



Genus 45. HELOTROPHA. 



Antennae ciliated ; eyes naked, with thick lashes at the 

 back ; thorax with a small back crest ; abdomen with three 

 or four small crests ; fore wings slightly retuse, with the 

 hind margin crenulated; hind wings also crenulated; vein o 

 not very weak, arising just below the middle of the cross- 

 bar. 



We have only a single species. 



1. H. fibrosa, Hoh.\ leucostigma, iitaml. Caf.—Ex- 

 panse li to 1^ inch. Fore wings rather pointed and slightly 

 retuse, deep mahogany-red, sometimes with a pale stripe 

 behind the middle ; reniform stigma small, usually white or 

 pale yellow ; hind wings pale smoky-brown. 



Antennae simple, finely ciliated, dark brown ; palpi short, 

 densely tufted, pale chocolate, apical joint small and sharply 

 porrected ; thorax rather smooth, dark brown with a reddish 

 tinge; top crest minute, only visible as a pair of small 

 points; back crest larger, each tuft faintly tipped with 

 white; fascicles dirty white; abdomen dull pale brown, 

 abundantly clothed from the base with long dirty-white 

 hair scales, among which on the dorsal ridge are three or 

 four distinct crests, their upper portion dark brown tipped 

 with white; lateral tufts broad and spreading, purplish- 

 brown; anal tuft flattened, umbreous. Fore wings rather 

 narrow and pointed; costa very faintly curved; apex 

 angulated, sometimes rather acutely so; hind margin 

 beneath it .faintly hollowed, crenulated throughout, not 

 very oblique, but also excavated above the anal angle; 

 dorsal margin straight; colour deep mahogany or purple- 

 brown ; basal line double, but only perceptible as two pairs 

 of cloudy black spots, and often obsolete ; first line double, 



