3i6 LEPIDOPTERA. 



1. H. rostralis, L.— Expanse 1 to 1^ inch. Palpi long, 

 porrected ; body slender ; fore wings retuse or even truncate 

 behind, pale brown or dull brown, with three or more central 

 erect tufts of jet-black scales ; hind wings very large, pale 

 smoke-colour. 



Antennas of the male slender, simple, minutely ciliated, 

 dark brown ; palpi large, projecting forward, upraised, and 

 bent up still more at the apical joint, deeply tufted but 

 flattened at the sides, dark brown ; eyes black, without 

 lashes ; head thickly and roughly tufted, the scales project- 

 ing forward over the bases of the palpi, dark brown ; thorax 

 of the same colour but smoother ; fascicles small, grey-white ; 

 abdomen slender and tapering, dull grey-brown or black- 

 brown ; on the first segment is a small brown dorsal crest ; 

 anal tuft small and compressed. Fore wings somewhat 

 oblong and truncate, moderately broad ; costa gently arched ; 

 apex angulated and almost squared ; hind margin below it 

 straight and perpendicular or very faintly hollowed, then 

 filled out and projecting, but rounded off to the anal angle ; 

 dorsal margin straight ; colour whitish-brown, light brown, 

 or pale umbreous ; first line, when visible, duplicated, angu- 

 lated, and indented, pale brown edged on both sides with 

 black-brown ; second line placed only just beyond the middle 

 of the wing, rather oblique and very straight, black, usually 

 acting as the outer margin of a blacker area of the wing than 

 the ground colour ; subterminal line a faint series of cloudy 

 whitish dots, bordering another dark stripe or space, but this 

 and the first line are often obsolete ; from the subterminal 

 line a cloudy black line or bar runs obliquely into the apex 

 of the wing ; orbicular stigma round, black, with a whitish 

 margin ; reniform indicated by two black dots placed per- 

 pendicularly ; from them a black line runs inward, sometimes 

 quite to the orbicular stigma ; beneath this there is usually 

 a black spot below the median nervure ; all these black dots are 

 formed of upraised scales, and the upper ones are edged with 

 erect paler scales ; extreme hind margin edged by a black 



