PTEKOPHORID.-E—I'LATYPTILUS. 355 



4. P. Zetterstedtii, ^^-Z/.— Expanse f to | inch (19-22 

 mm.). Fore wings sharply pointed ; bright whitish-brown ; 

 the costal triangle distinct, dark red-brown, sometimes pro- 

 duced toward the anal angle. Hind wings glossy grey- 

 brown. 



Antennre of the male very short and slender, black- brown 

 barred with white; palpi small, slender, pointed, brown ; 

 head and thorax brownish-drab dusted with chocolate ; abdo- 

 men I'eddish-brown, with the base white. Fore wings 

 narrow, rather squared behind ; the costa a little arched 

 beyond the middle ; apex sharply angulated ; hind margin 

 retuse, shortly divided, oblique, but with a distinct anal 

 angle ; dorsal margin hollowed ; colour pale brownish- 

 ochreous or tawny-white, dusted toward the base with white, 

 and having below this a brown streak on the dorsal margin 

 which extends to an obscure broken oblique transverse 

 stripe; beyond this is a chocolate streak near the dorsal 

 margin having white dusting on either side ; still beyond a 

 large red-brown or dark chocolate triangle having its base 

 on the costa, edged outside with pale ochreous, extends to a 

 black dot just before the fissure ; a slender whitish ochreous 

 stripe, parallel with the hind margin, precedes a dark mar- 

 ginal band edged with black ; cilia dusky-white. Hind 

 wings glistening pale purplish-brown, the cilia of the three 

 long lobes being of the same colour, but upon the hindmost 

 portion there is a black spot with some white edging. Legs 

 long and very slender, white, clouded at the joints with dark 

 brown. Female similar, but rather more clouded beyond 

 the triangle with chocolate-brown, and with the fore wings 

 more widely cleft. 



Underside of the fore wings smoky red-brown, with the 

 pale areas of the upper side sharply indicated. Hind wings 

 as on the upper side. Body brown. 



On the wing in June and July. 



Larva and Pupa unknown. The food-plant is probably 



