NOTODONTID^. 105 



Genus 3. NOTODONTA. 



Antennge in the male pectinated to near the apex, but in 

 the upper portion the teeth diminish regularly in length, 

 and in most species become much broader ; all ciliated ; fore 

 wings of a long-ovate shape, rounded at the tip, and having 

 on the dorsal margin a " prominent " or projecting tuft 

 of scales which in repose forms a dorsal hump. 



Larv^ in some cases cylindrical, in others of most 

 grotesque forms, always with sixteen legs, but usually 

 carrying the anal pair elevated. 



Pup^ of normal form, in a thin silken cocoon, usually 

 subterranean, occasionally between leaves. 



1. N. dictaea, Z., tremula, Stand. Gat. — Expanse If to 

 2^ inches. Fore wings long, narrow, rounded at the tip, 

 whitish, with longitudinal black stripes and whitn nervures ; 

 dorsal margin with a small prominent tuft ; hind wings 

 white, with a dark spot at the anal angle. 



Antennae of the male strongly pectinated, the teeth stout, 

 regular, rather spreading, closely fringed; light brown. 

 Head small, purple-brown, tufts at the base of the antennae 

 darker ; collar broad, brown or blackish-brown ; thorax 

 broad, loosely covered with downy dark brown scales mixed 

 with silvery white ; black lines at the back of the rather 

 raised shoulder-lappets, and of the thorax ; abdomen long, 

 stout, cylindrical, yellowish brown, slightly tufted down the 

 sides, and with a short, broad, golden-brown anal tuft. Fore 

 wings long-ovate, costa straight to beyond the middle, then 

 gently rounded, the curve passing smoothly round the apex 

 and oblique hind margin to the anal angle ; dorsal margin 

 rather short, bending out from the base and slightly angu- 

 lated in the middle, where is a protruding, angulated tuft 

 of scales, forming a dorsal prominent, or hump, when the 

 wings are closed ; colour whitish ; a broad, deep black, 



