96 LEPIDOPTERA. 



on moors in Argyleshire. In Ireland it is recorded from the 

 counties of Wicklow, Galway and Sligo. Abroad it does 

 not seem to be very widely distributed, but is found in 

 Northern and Western France, Northern Germany and 

 Saxony. 



Genus 50. SENTA. 



Antennie ciliated ; eyes naked, with prostrate lashes at 

 the back ; thorax narrow^ smooth, abdomen very slender, 

 flattened, without crests ; fore wings elongated, rather oblong 

 and truncate ; pale drab, almost without markings. Hind 

 wings thin, broad, vein 5 extremely thin, arising from almost 

 the middle of the cross-bar. 



We have only one species. 



1. S. ulvse, Huh. ; maritima, Stand. Cat. — Expanse 1 to 

 1| inch. Thorax slender and weak; fore wings oblong, 

 yellowish-white, clouded all over with minute grey lines ; hind 

 wings white ; abdomen slender and flattened. 



Antennse of the male simple, minutely ciliated, pale brown, 

 white at the base ; palpi slender, depressed but curled up, 

 whitish-drab, the apical joint prominent ; head smooth, dusky- 

 white ; thorax narrow and weak, smooth, but the shoulder 

 lappets raised at the back, brownish-drab ; fascicles short, 

 white ; abdomen long, flattened, whitish-brown ; lateral 

 tufts minute ; anal tuft large and elongated. Fore wings 

 narrowly oblong, rather truncate ; costa arched ; apex squarely 

 angulated ; hind margin perpendicular, or even faintly hol- 

 lowed beneath it, suddenly bent below the middle and thence 

 oblique ; dorsal mai'gin gently rounded ; colour whitish-drab, 

 faintly dusted with brown and clouded all over with grey, 

 which is usually disposed in short abundant longitudinal 

 cloudy lines ; or more especially along the costal region, the 

 remainder with more scattered cloudy lines, but the nervures 

 always left of the pale ground colour ; position of the first 

 line suggested by two or three dusky dots on the principal 



