ng( LEPIDOPTERA. 



throughout Central Europe, Southern Sweden, Piedmont, 

 Livonia, and Southern Russia ; also in North America, but 

 called plagiata. 



5. N. trepida, Esp. — Expanse 2 to 2^ inches. Fore wings 

 pale grey, with two black cross lines near the base, a row 

 of reddish spots near the hind margin, and a large dark grey- 

 prominent tuft ; hind wings whitish ; costal region mottled 

 with grey. 



Antennae of the male strongly pectinated for a considerable 

 portion of their length, very shortly so toward the tip, the 

 rows of teeth standing away from each other, on nearly 

 opposite sides ; pale reddish-brown. Head pale brown ; 

 thorax very robust, densely covered with slightly raised, dark 

 brown scales having a yellowish gloss ; and with blackish 

 stripes at the back of the collar, the sides of the shoulder 

 lappets and down the middle of the back ; abdomen long 

 and rather stout, glossy light brown, with two upright crests, 

 or tufts of black scales, on the basal segment, a row of tufts 

 of light brown scales down each side, and a similar broad, 

 short anal tuft. Fore wings very long ; costa straight to 

 beyond the middle, then rounded gently, in a long arch, to 

 the apex, which is blunt ; hind margin much curved, very 

 long and oblique; dorsal margin very short, bent outward, 

 from near the base, into a broad obtuse angle, which is 

 crowned by a considerable projection of grey scales tipped 

 with black. Rather thinly scaled, whitish-grey, dusted all 

 over with long dark grey, or blackish, scales, which are 

 separately visible. Close to the base is a black bar from the 

 costa joining a black loop at the separation of the larger ner- 

 vures ; outside it a blackish dash toward the dorsal margin ; 

 first line black, broadly and repeatedly angulated ; second line 

 indicated by a black streak beyond the middle of the costa, 

 and a series of black dots on the nervures, joined together 

 by almost imperceptible scalloped shades ; before this is 

 another blackish costal streak touching a discal lunule, 



